WEATHER IN Thunder Bay

Weather data archive :: Thunder Bay (Ontario, Canada)

Time (UTC), date
10	15.12
11	15.12
12	15.12
13	15.12
14	15.12
15	15.12
16	15.12
17	15.12
18	15.12
19	15.12
20	15.12
21	15.12
22	15.12
23	15.12
00	16.12
01	16.12
02	16.12
03	16.12
04	16.12
05	16.12
06	16.12
07	16.12
08	16.12
09	16.12
10	16.12
11	16.12
12	16.12
13	16.12
14	16.12
15	16.12
16	16.12
17	16.12
18	16.12
19	16.12
20	16.12
21	16.12
22	16.12
23	16.12
00	17.12
01	17.12
02	17.12
03	17.12
04	17.12
05	17.12
06	17.12
07	17.12
08	17.12
09	17.12
10	17.12
11	17.12
12	17.12
13	17.12
14	17.12
15	17.12
16	17.12
17	17.12
18	17.12
19	17.12
20	17.12
21	17.12
22	17.12
23	17.12
00	18.12
01	18.12
02	18.12
03	18.12
04	18.12
05	18.12
06	18.12
07	18.12
08	18.12
09	18.12
10	18.12
11	18.12
12	18.12
13	18.12
14	18.12
15	18.12
16	18.12
17	18.12
18	18.12
19	18.12
20	18.12
21	18.12
22	18.12
23	18.12
00	19.12
01	19.12
02	19.12
03	19.12
04	19.12
05	19.12
06	19.12
07	19.12
08	19.12
09	19.12
10	19.12
11	19.12
12	19.12
13	19.12
14	19.12
15	19.12
16	19.12
17	19.12
18	19.12
19	19.12
20	19.12
21	19.12
22	19.12
23	19.12
00	20.12
01	20.12
02	20.12
03	20.12
04	20.12
05	20.12
06	20.12
07	20.12
08	20.12
09	20.12
10	20.12
11	20.12
12	20.12
13	20.12
14	20.12
15	20.12
16	20.12
17	20.12
18	20.12
19	20.12
20	20.12
21	20.12
22	20.12
23	20.12
00	21.12
01	21.12
02	21.12
03	21.12
04	21.12
05	21.12
06	21.12
07	21.12
08	21.12
09	21.12
10	21.12
11	21.12
12	21.12
13	21.12
14	21.12
15	21.12
16	21.12
17	21.12
18	21.12
19	21.12
20	21.12
21	21.12
22	21.12
23	21.12
00	22.12
01	22.12
02	22.12
03	22.12
04	22.12
05	22.12
06	22.12
07	22.12
08	22.12
09	22.12

Wind (dir.,m/s)		Visibility	Phenomena	Clouds	T (C)	Td (C)	f (%)	Te (C)	Ts (C)	Comfort	P (hPa)	Po hPa)	Tmin (C)	Tmax (C)	R (mm)	R24 (mm)	S (sm)
N	1	n/a		n/a	-0.5	-2.5	86	-3	-3	seasonable	1026.0	1000.7
calm	0	n/a		n/a	0.0	-2.2	85	-1	-1	warm	1024.0	998.8
E	2	n/a		n/a	+0.3	-1.3	89	-3	-3	warm	1024.0	998.8	-3.5	+0.3			6
NE	1	n/a		n/a	+0.1	-1.0	92	-2	-2	warm	1024.0	998.8
SE	2	n/a		n/a	+1.2	-0.9	86	-2	-2	warm	1024.0	998.9
E	1	n/a		n/a	+1.1	-0.5	89	-1	-0	warm	1023.0	997.9
SE	1	n/a		n/a	+1.5	-0.1	89	-0	+1	warm	1023.0	998.0
S	3	n/a		n/a	+1.9	+0.3	89	-2	-1	warm	1022.0	997.0
S	2	n/a		n/a	+2.0	+0.7	91	-1	+1	warm	1021.0	996.1	-3.5	+2.0
E	2	n/a		n/a	+1.7	+0.5	92	-2	0	warm	1020.0	995.1
SE	2	n/a		n/a	+1.5	+0.6	94	-2	-1	warm	1019.0	994.1
S	1	n/a		n/a	+2.0	+0.8	92	0	+1	warm	1019.0	994.1
S	1	n/a		n/a	+2.0	+0.8	92	0	0	warm	1019.0	994.1
S	1	n/a		n/a	+2.0	+0.8	92	0	0	warm	1018.0	993.2
E	3	n/a	{precipitation}	n/a	+1.8	+1.1	95	-3	-3	warm	1017.0	992.2	-0.7	+2.1	0.0	0.0
SE	3	n/a		n/a	+1.9	+1.0	94	-3	-3	warm	1016.0	991.2
SE	2	n/a		n/a	+2.6	+1.4	92	-1	-1	warm	1016.0	991.3
SE	2	n/a		n/a	+2.5	+1.5	93	-1	-1	warm	1015.0	990.3			0.2
S	3	n/a		n/a	+3.2	+1.9	91	-1	-1	warm	1014.0	989.4
S	2	n/a		n/a	+3.1	+2.4	95	-0	-0	warm	1014.0	989.4
SE	4	n/a	{precipitation}	n/a	+2.7	+1.8	94	-2	-2	warm	1012.0	987.4	-0.7	+3.4	0.2	0.3
SE	2	n/a		n/a	+2.4	+2.0	97	-1	-1	warm	1011.0	986.4
SE	2	n/a		n/a	+3.2	+2.5	95	0	0	warm	1011.0	986.4
S	2	n/a		n/a	+2.9	+2.0	94	-0	-0	warm	1009.0	984.5
SE	1	n/a		n/a	+3.2	+2.3	94	+2	+2	warm	1008.0	983.5
S	3	n/a		n/a	+4.0	+2.4	89	0	0	warm	1007.0	982.6
S	2	n/a		n/a	+3.5	+2.3	92	0	0	warm	1007.0	982.6	+1.7	+3.4		0.3	3
S	1	n/a		n/a	+3.5	+2.2	91	+2	+2	warm	1006.0	981.6
SW	2	n/a		n/a	+3.2	+1.1	86	0	0	warm	1005.0	980.6
S	1	n/a		n/a	+2.7	+0.8	87	+1	+2	warm	1005.0	980.5			0.0
S	1	n/a		n/a	+2.7	+0.8	87	+1	+2	warm	1005.0	980.5
SW	1	n/a		n/a	+2.7	+0.9	88	+1	+3	warm	1004.0	979.6
S	1	n/a		n/a	+3.0	+0.7	85	+1	+4	warm	1003.0	978.6	+1.3	+4.2	0.0	0.4
S	2	n/a		n/a	+3.1	+0.5	83	0	+2	warm	1002.0	977.6
SW	3	n/a		n/a	+3.0	+0.6	84	-1	0	warm	1002.0	977.6
W	3	n/a		n/a	+2.2	+0.9	91	-2	-2	warm	1002.0	977.6
W	2	n/a		n/a	+1.7	+1.0	95	-2	-2	warm	1002.0	977.5
W	4	n/a		n/a	+1.7	-0.1	88	-3	-3	warm	1002.0	977.5
W	4	n/a		n/a	+1.4	-0.7	86	-4	-4	warm	1003.0	978.5	+1.4	+3.6		0.4
W	4	n/a		n/a	+1.4	-1.5	81	-4	-4	warm	1003.0	978.5
W	4	n/a		n/a	+1.0	-2.1	80	-4	-4	warm	1003.0	978.4
W	4	n/a		n/a	+1.0	-1.7	82	-4	-4	warm	1004.0	979.4
W	4	n/a		n/a	+0.7	-1.5	85	-5	-5	warm	1004.0	979.4
W	4	n/a		n/a	+0.4	-2.0	84	-5	-5	warm	1004.0	979.3
W	6	n/a		n/a	+1.0	-1.9	81	-5	-5	warm	1005.0	980.4	+0.1	+4.2		0.0
W	7	n/a		n/a	+1.3	-1.6	81	-5	-5	warm	1005.0	980.4
W	8	n/a		n/a	+1.4	-2.0	78	-6	-6	warm	1006.0	981.4
NW	8	n/a		n/a	+1.3	-2.1	78	-6	-6	warm	1008.0	983.3
NW	5	n/a		n/a	+0.2	-1.9	86	-6	-6	warm	1010.0	985.2
NW	9	n/a		n/a	-1.0	-4.9	75	-9	-9	warm	1011.0	986.0
NW	10	n/a		n/a	-2.3	-6.8	71	-11	-11	seasonable	1013.0	987.9	-2.3	+4.2		0.0	3
NW	9	n/a		n/a	-3.2	-7.5	72	-12	-12	warm	1014.0	988.7
NW	6	n/a		n/a	-3.0	-7.1	73	-10	-10	warm	1016.0	990.7
NW	8	n/a		n/a	-3.5	-7.5	74	-12	-12	seasonable	1017.0	991.6
NW	6	n/a		n/a	-3.6	-7.2	76	-11	-10	warm	1019.0	993.6
NW	8	n/a		n/a	-4.2	-8.0	75	-13	-12	warm	1020.0	994.5
NW	6	n/a		n/a	-4.1	-8.4	72	-11	-11	seasonable	1020.0	994.5	-4.3	+1.7
NW	8	n/a		n/a	-4.2	-8.5	72	-13	-12	seasonable	1020.0	994.5
NW	5	n/a		n/a	-4.5	-8.8	72	-11	-11	warm	1021.0	995.5
NW	6	n/a		n/a	-4.3	-8.6	72	-12	-12	seasonable	1021.0	995.5
NW	6	n/a		n/a	-4.4	-8.5	73	-12	-12	warm	1022.0	996.4
NW	5	n/a		n/a	-4.6	-8.5	74	-11	-11	warm	1023.0	997.4
NW	4	n/a		n/a	-4.8	-8.7	74	-11	-11	seasonable	1024.0	998.3	-4.8	-2.3
NW	2	n/a		n/a	-4.8	-8.7	74	-9	-9	warm	1024.0	998.3
NW	3	n/a		n/a	-4.7	-8.3	76	-10	-10	warm	1024.0	998.4
NW	5	n/a		n/a	-4.9	-8.6	75	-12	-12	seasonable	1024.0	998.3
NW	6	n/a		n/a	-5.1	-9.2	73	-13	-13	seasonable	1024.0	998.3
NW	4	n/a		n/a	-5.6	-9.5	74	-12	-12	warm	1024.0	998.3
NW	4	n/a		n/a	-6.1	-9.8	75	-13	-13	seasonable	1024.0	998.2	-6.3	+1.7
NW	3	n/a		n/a	-6.6	-10.6	73	-12	-12	warm	1024.0	998.2
NW	6	n/a		n/a	-6.6	-10.5	74	-15	-15	warm	1025.0	999.1
NW	5	n/a		n/a	-6.7	-10.4	75	-14	-14	seasonable	1025.0	999.1
NW	10	n/a		n/a	-8.7	-14.6	62	-19	-19	seasonable	1026.0	999.9
N	5	n/a		n/a	-10.4	-15.9	64	-18	-18	warm	1026.0	999.7
NW	5	n/a		n/a	-11.3	-16.9	63	-19	-19	cool	1027.0	1000.6	-11.4	+1.7			3
NW	5	n/a		n/a	-12.5	-18.3	62	-21	-21	seasonable	1028.0	1001.5
NW	6	n/a		n/a	-12.8	-18.9	60	-22	-22	seasonable	1028.0	1001.4
NW	6	n/a		n/a	-13.1	-18.8	62	-22	-22	very cold	1029.0	1002.4
N	8	n/a		n/a	-12.4	-18.9	58	-23	-22	cool	1029.0	1002.5
NW	8	n/a		n/a	-11.9	-18.7	57	-22	-22	seasonable	1029.0	1002.5
NW	8	n/a		n/a	-11.4	-18.6	55	-21	-21	very cold	1028.0	1001.6	-13.2	-6.0
NW	7	n/a		n/a	-10.7	-18.4	53	-20	-19	seasonable	1028.0	1001.7
NW	6	n/a		n/a	-10.3	-18.2	52	-19	-18	seasonable	1027.0	1000.7
NW	5	n/a		n/a	-10.4	-18.1	53	-18	-18	cold	1028.0	1001.7
NW	3	n/a		n/a	-11.3	-18.3	56	-17	-17	seasonable	1028.0	1001.6
NW	3	n/a		n/a	-13.1	-18.3	65	-19	-19	seasonable	1029.0	1002.4
NW	3	n/a		n/a	-14.2	-19.1	66	-21	-21	very cold	1029.0	1002.3	-14.6	-10.2
W	1	n/a		n/a	-14.0	-18.4	69	-16	-16	seasonable	1029.0	1002.3
W	3	n/a		n/a	-16.0	-19.5	74	-23	-23	seasonable	1030.0	1003.1
NW	3	n/a		n/a	-17.0	-20.4	75	-24	-24	very cold	1030.0	1003.0
W	2	n/a		n/a	-17.1	-20.3	76	-22	-22	cool	1031.0	1003.9
W	2	n/a		n/a	-17.7	-21.2	74	-23	-23	seasonable	1031.0	1003.9
NW	2	n/a		n/a	-19.1	-21.7	80	-25	-25	very cold	1030.0	1002.7	-20.5	-6.0
W	3	n/a		n/a	-18.9	-21.8	78	-26	-26	cold	1030.0	1002.8
W	2	n/a		n/a	-20.3	-23.4	76	-26	-26	seasonable	1031.0	1003.6
N	1	n/a		n/a	-21.6	-24.2	79	-25	-25	very cold	1031.0	1003.4
SW	1	n/a		n/a	-21.3	-23.5	82	-24	-24	cool	1031.0	1003.5
NW	1	n/a		n/a	-21.7	-24.3	79	-25	-25	seasonable	1030.0	1002.5
calm	0	n/a		n/a	-20.6	-23.1	80	-21	-21	very cold	1030.0	1002.6	-22.2	-6.0			3
W	2	n/a		n/a	-19.9	-22.6	79	-26	-26	cold	1030.0	1002.7
W	2	n/a		n/a	-19.5	-22.3	78	-25	-25	seasonable	1030.0	1002.7
SW	3	n/a		n/a	-18.6	-21.5	78	-26	-26	very cold	1030.0	1002.8
W	1	n/a		n/a	-17.3	-20.3	77	-20	-19	seasonable	1030.0	1002.9
S	1	n/a		n/a	-15.7	-19.4	73	-18	-16	seasonable	1029.0	1002.1
W	1	n/a		n/a	-15.0	-18.6	74	-18	-15	cold	1028.0	1001.2	-22.2	-15.0
calm	0	n/a		n/a	-13.2	-17.0	73	-13	-11	seasonable	1028.0	1001.4
W	2	n/a		n/a	-12.7	-16.5	73	-17	-16	seasonable	1027.0	1000.5
W	2	n/a		n/a	-12.2	-16.0	73	-17	-16	cold	1028.0	1001.5
SW	1	n/a		n/a	-12.0	-15.7	74	-14	-14	seasonable	1028.0	1001.5
W	1	n/a		n/a	-11.7	-15.2	75	-14	-14	warm	1029.0	1002.5
NW	1	n/a		n/a	-11.6	-15.3	74	-14	-14	seasonable	1029.0	1002.5	-22.2	-11.6
SW	1	n/a		n/a	-11.3	-14.8	75	-14	-14	warm	1030.0	1003.6
W	1	n/a		n/a	-10.8	-14.0	77	-13	-13	warm	1030.0	1003.6
W	1	n/a		n/a	-10.5	-14.4	73	-13	-13	seasonable	1029.0	1002.7
N	3	n/a		n/a	-10.5	-16.4	62	-16	-16	warm	1029.0	1002.7
W	2	n/a		n/a	-11.3	-16.9	63	-16	-16	warm	1029.0	1002.6
W	3	n/a		n/a	-11.6	-16.7	66	-18	-18	seasonable	1029.0	1002.5	-22.2	-10.4
NW	4	n/a		n/a	-12.4	-17.6	65	-20	-20	seasonable	1030.0	1003.4
NW	3	n/a		n/a	-14.0	-19.3	64	-20	-20	warm	1030.0	1003.3
NW	3	n/a		n/a	-14.9	-20.0	65	-21	-21	seasonable	1031.0	1004.2
W	3	n/a		n/a	-15.7	-19.9	70	-22	-22	seasonable	1031.0	1004.1
W	4	n/a		n/a	-16.6	-20.6	71	-25	-25	warm	1031.0	1004.0
W	4	n/a		n/a	-16.7	-20.9	70	-25	-25	cold	1032.0	1004.9	-16.9	-10.4			3
W	4	n/a		n/a	-17.2	-21.3	70	-25	-25	seasonable	1032.0	1004.9
W	3	n/a		n/a	-17.5	-22.3	66	-25	-25	warm	1033.0	1005.8
W	4	n/a		n/a	-17.1	-23.0	60	-25	-25	very cold	1033.0	1005.9
NW	4	n/a		n/a	-16.1	-22.4	58	-24	-23	seasonable	1033.0	1006.0
NW	5	n/a		n/a	-15.0	-21.4	58	-24	-23	seasonable	1033.0	1006.1
NW	4	n/a		n/a	-13.5	-20.6	55	-21	-19	cold	1032.0	1005.3	-17.9	-11.6
NW	5	n/a		n/a	-12.0	-20.5	49	-20	-19	seasonable	1032.0	1005.4
NW	6	n/a		n/a	-11.7	-21.0	46	-20	-20	warm	1032.0	1005.5
N	7	n/a		n/a	-12.6	-20.8	50	-22	-22	cold	1033.0	1006.3
N	6	n/a		n/a	-14.2	-21.5	54	-24	-24	seasonable	1034.0	1007.1
NW	4	n/a		n/a	-15.8	-22.1	58	-24	-24	seasonable	1035.0	1008.0
NW	1	n/a		n/a	-17.0	-22.9	60	-20	-20	cold	1036.0	1008.8	-17.9	-11.7
N	3	n/a		n/a	-18.7	-23.6	65	-26	-26	cold	1036.0	1008.6
SW	1	n/a		n/a	-19.0	-23.1	70	-22	-22	seasonable	1037.0	1009.6
N	2	n/a		n/a	-22.2	-25.9	72	-28	-28	very cold	1037.0	1009.2
N	4	n/a		n/a	-21.1	-24.9	71	-30	-30	very cold	1037.0	1009.3
W	1	n/a		n/a	-21.4	-24.8	74	-25	-25	seasonable	1038.0	1010.3
W	3	n/a		n/a	-21.9	-25.1	75	-30	-30	very cold	1038.0	1010.2	-22.8	-11.6
W	2	n/a		n/a	-22.3	-25.5	75	-29	-29	cold	1038.0	1010.2
SW	3	n/a		n/a	-23.2	-26.1	77	-31	-31	risk of frostbite	1038.0	1010.1
SW	3	n/a		n/a	-23.2	-26.4	75	-31	-31	risk of frostbite	1038.0	1010.1
SW	3	n/a		n/a	-23.2	-26.5	74	-31	-31	risk of frostbite	1038.0	1010.1
W	2	n/a		n/a	-23.8	-27.0	75	-30	-30	seasonable	1038.0	1010.0
W	3	n/a		n/a	-24.1	-27.0	77	-33	-33	risk of frostbite	1038.0	1010.0	-24.9	-11.6			3
W	2	n/a		n/a	-24.1	-27.1	76	-31	-31	risk of frostbite	1039.0	1011.0
SW	2	n/a		n/a	-24.6	-27.6	76	-31	-31	risk of frostbite	1039.0	1010.9
W	2	n/a		n/a	-23.9	-27.3	73	-30	-30	very cold	1038.0	1010.0
SW	2	n/a		n/a	-21.3	-25.1	71	-27	-26	cold	1038.0	1010.3
SW	1	n/a		n/a	-19.1	-24.7	61	-22	-20	seasonable	1037.0	1009.6
W	2	n/a		n/a	-17.0	-23.5	57	-22	-20	very cold	1036.0	1008.8	-24.9	-17.0
W	2	n/a		n/a	-15.4	-23.0	52	-20	-19	seasonable	1035.0	1008.0
SE	1	n/a		n/a	-14.9	-22.1	54	-17	-16	warm	1034.0	1007.1
calm	0	n/a		n/a	-13.4	-22.0	48	-13	-13	seasonable	1034.0	1007.2
E	1	n/a		n/a	-14.7	-20.3	62	-17	-17	seasonable	1034.0	1007.1
NW	1	n/a		n/a	-18.3	-21.9	73	-21	-21	seasonable	1034.0	1006.7
SW	1	n/a		n/a	-19.4	-21.7	82	-22	-22	very cold	1033.0	1005.6	-24.9	-12.6
calm	0	n/a		n/a	-18.0	-20.9	78	-18	-18	seasonable	1032.0	1004.8
SW	1	n/a		n/a	-16.5	-20.2	73	-19	-19	seasonable	1031.0	1004.0
W	1	n/a		n/a	-15.9	-19.3	75	-19	-19	cold	1031.0	1004.1
W	2	n/a		n/a	-15.2	-18.3	77	-20	-20	seasonable	1030.0	1003.2
W	1	n/a		n/a	-14.8	-17.8	78	-17	-17	warm	1030.0	1003.2
W	1	n/a		n/a	-14.1	-17.1	78	-17	-17	seasonable	1029.0	1002.3	-24.9	-12.6
calm	0	n/a		n/a	-13.5	-16.5	78	-14	-14	seasonable	1028.0	1001.4
calm	0	n/a		n/a	-12.9	-15.9	78	-13	-13	warm	1027.0	1000.5
S	1	n/a		n/a	-12.1	-14.7	81	-14	-14	seasonable	1027.0	1000.5

Weather station location Thunder Bay (Ontario, Canada): latitude 48.37 longitude -89.31 height above sea level 199 m.

The archive by default shows the weather in Thunder Bay for the last week. You can obtain the archived data for the whole month and for the previous months, starting from January 2011, by selecting the desired date range from the drop-down list and clicking the "Find!" button.

Attention! The time in the tables is UTC. To get the local time, you need to add shift, which is equal to -5 h.

See also the weather archive in nearby cities and at nearby weather stations:

Weather in Thunder Bay (Ontario, Canada)(1 km)
Weather in Welcome Island (Ontario, Canada)(15 km)
Weather in Upsala (Ontario, Canada)(112 km)
Weather in Cameron Falls (Ontario, Canada)(113 km)
Weather in Little Flatland Island (Ontario, Canada)(166 km)
Weather in Terrace Bay (Ontario, Canada)(171 km)
Weather in Atikokan (Ontario, Canada)(176 km)
Weather in Armstrong (Ontario, Canada)(216 km)
Weather in Pukaskwa (Ontario, Canada)(223 km)
Weather in Geraldton (Ontario, Canada)(234 km)

Explanations to columns:

Wind - indicated wind speed in m/s - average for 10 minutes, gusts within and between terms (in curly brackets) and direction from which the wind blows: N - North, NE - North-East, E - East, SE - South-East , S - South, SW - South-West, W - West, NW - North-West.
Visibility - horizontal range of visibility in meters or kilometers. When visibility is from 1 to 10 km in the absence of precipitation, haze is usually observed, and when visibility is reduced to 1 km or less, fog is observed. In dry weather, visibility may be reduced by smoke, dust, or haze.
Phenomena - atmospheric phenomena observed during the period or in the last hour before the period are indicated; curly brackets indicate phenomena observed between periods (1-3 hours before the period); square brackets indicate hail or icy deposits with their diameter in mm.
Clouds - are through slash total and lower clouds in points, and the height of the lower border of the cloud in meters; square brackets contain cloud forms: Ci - Cirrus, Cs - Cirrostratus, Cc - Cirrocumulus, Ac - Altocumulus, As - Altostratus, Sc - Stratocumulus, Ns - Nimbostratus, Cu - Cumulus, Cb - Cumulonimbus. For more information about cloud classification, see the cloud Atlas (PDF).
T - Air temperature - temperature measured at a height of 2 m above the ground.
Td - Dew point temperature - the temperature at which the water vapor contained in the air reaches saturation.
f - Relative humidity measured at a height of 2 m above the ground.
Te - Effective temperature is the temperature felt by a seasonally dressed person in the shade. Characteristic of stuffy weather. The calculation takes into account the effects of air humidity and wind speed on a person's heat sensation.
Tes - Effective sun temperature - The temperature a person feels, corrected for solar heating. Characteristic of sweltering weather. Depends on the height of the sun above the horizon, cloud cover, and wind speed. At night, overcast, and with winds of 12 m/s or more, the correction is zero.
P - Atmospheric pressure - atmospheric pressure reduced to sea level.
Po - Atmospheric pressure - atmospheric pressure measured at the station level.
Tmin - Minimum temperature - minimum air temperature at a height of 2 m above the ground.
Tmax - Maximum temperature - maximum air temperature at a height of 2 m above the ground.
R - Precipitation - The amount of precipitation over a period of time, mm. When you hover the mouse cursor over a number - the period of time during which the specified amount of precipitation fell.
R24 - 24hour precipitation - The amount of precipitation in 24 hours, mm.
S - Snow cover - The height of the snow cover. When you hover the mouse over the number - the state of the snow cover and the degree of coverage in points.