| 20:15 EST |  Overcast | -6°C / 21°F | -15°C / 5°F | 49% | 1014 mb (29.94 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 230115Z 27009KT 10SM OVC048 M06/M15 A2993 RMK AO1 |
| 19:55 EST |  Mostly Cloudy | -6°C / 21°F | -16°C / 3°F | 45% | 1014 mb (29.94 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 230055Z 27006KT 10SM BKN048 M06/M16 A2994 RMK AO1 |
| 19:35 EST |  Clear | -6°C / 21°F | -15°C / 5°F | 49% | 1014 mb (29.94 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 230035Z 27006KT 10SM CLR M06/M15 A2994 RMK AO1 |
| 19:15 EST |  Clear | -6°C / 21°F | -15°C / 5°F | 49% | 1014 mb (29.94 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 230015Z 27008KT 10SM CLR M06/M15 A2993 RMK AO1 |
| 18:55 EST |  Clear | -6°C / 21°F | -15°C / 5°F | 49% | 1013 mb (29.91 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 222355Z 28009G16KT 10SM CLR M06/M15 A2992 RMK AO1 11020 21060 410201070 52014 |
| 18:35 EST |  Clear | -6°C / 21°F | -14°C / 7°F | 54% | 1013 mb (29.91 in) | W 22 kph (W 13.8 mph) | - | 10SM |
| | KSFM 222335Z 27012G16KT 10SM CLR M06/M14 A2992 RMK AO1 |
| 18:15 EST |  Partly Cloudy | -6°C / 21°F | -15°C / 5°F | 49% | 1013 mb (29.91 in) | W 19 kph (W 11.5 mph) | - | 10SM |
| | KSFM 222315Z 28010KT 10SM SCT050 M06/M15 A2992 RMK AO1 |
| 17:55 EST |  Mostly Cloudy | -6°C / 21°F | -14°C / 7°F | 54% | 1013 mb (29.91 in) | W 19 kph (W 11.5 mph) | - | 10SM |
| | KSFM 222255Z 27010G15KT 10SM BKN050 M06/M14 A2992 RMK AO1 |
| 17:35 EST |  Partly Cloudy | -6°C / 21°F | -15°C / 5°F | 49% | 1013 mb (29.91 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KSFM 222235Z 27013G17KT 10SM SCT050 M06/M15 A2991 RMK AO1 |
| 17:15 EST |  Partly Cloudy | -5°C / 23°F | -14°C / 7°F | 50% | 1013 mb (29.91 in) | W 20 kph (W 12.7 mph) | - | 10SM |
| | KSFM 222215Z 27011G16KT 10SM FEW050 M05/M14 A2991 RMK AO1 |
| 16:55 EST |  Partly Cloudy | -5°C / 23°F | -14°C / 7°F | 50% | 1013 mb (29.91 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 222155Z 27009G17KT 10SM FEW050 M05/M14 A2990 RMK AO1 |
| 16:35 EST |  Clear | -4°C / 25°F | -14°C / 7°F | 46% | 1013 mb (29.91 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 222135Z 27009KT 10SM CLR M04/M14 A2990 RMK AO1 |
| 16:15 EST |  Clear | -4°C / 25°F | -14°C / 7°F | 46% | 1012 mb (29.88 in) | SSW 20 kph (SSW 12.7 mph) | - | 10SM |
| | KSFM 222115Z 26011G15KT 10SM CLR M04/M14 A2989 RMK AO1 |
| 15:55 EST |  Partly Cloudy | -4°C / 25°F | -13°C / 9°F | 50% | 1012 mb (29.88 in) | SSW 20 kph (SSW 12.7 mph) | - | 10SM |
| | KSFM 222055Z 26011G17KT 10SM FEW050 M04/M13 A2988 RMK AO1 52014 |
| 15:35 EST |  Partly Cloudy | -4°C / 25°F | -14°C / 7°F | 46% | 1012 mb (29.88 in) | SSW 24 kph (SSW 15 mph) | - | 10SM |
| | KSFM 222035Z 26013G18KT 10SM FEW050 M04/M14 A2987 RMK AO1 |
| 15:15 EST |  Clear | -3°C / 27°F | -13°C / 9°F | 46% | 1011 mb (29.85 in) | SSW 26 kph (SSW 16.1 mph) | - | 10SM |
| | KSFM 222015Z 26014G19KT 10SM CLR M03/M13 A2986 RMK AO1 |
| 14:55 EST |  Clear | -3°C / 27°F | -13°C / 9°F | 46% | 1011 mb (29.85 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KSFM 221955Z 27013G21KT 10SM CLR M03/M13 A2986 RMK AO1 |
| 14:35 EST |  Partly Cloudy | -3°C / 27°F | -14°C / 7°F | 43% | 1011 mb (29.85 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KSFM 221935Z 28013G20KT 10SM FEW046 M03/M14 A2985 RMK AO1 |
| 14:15 EST |  Mostly Cloudy | -2°C / 28°F | -13°C / 9°F | 43% | 1011 mb (29.85 in) | SSW 20 kph (SSW 12.7 mph) | - | 10SM |
| | KSFM 221915Z 26011G17KT 10SM BKN046 M02/M13 A2985 RMK AO1 |
| 13:55 EST |  Mostly Cloudy | -2°C / 28°F | -13°C / 9°F | 43% | 1010 mb (29.83 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KSFM 221855Z 27013G19KT 10SM BKN048 M02/M13 A2984 RMK AO1 |
| 13:35 EST |  Partly Cloudy | -2°C / 28°F | -13°C / 9°F | 43% | 1011 mb (29.85 in) | W 20 kph (W 12.7 mph) | - | 10SM |
| | KSFM 221835Z 27011G18KT 10SM FEW048 M02/M13 A2985 RMK AO1 |
| 13:15 EST |  Clear | -2°C / 28°F | -13°C / 9°F | 43% | 1010 mb (29.83 in) | SSW 22 kph (SSW 13.8 mph) | - | 10SM |
| | KSFM 221815Z 26012G16KT 10SM CLR M02/M13 A2984 RMK AO1 |
| 12:55 EST |  Clear | -2°C / 28°F | -12°C / 10°F | 47% | 1010 mb (29.83 in) | SSW 17 kph (SSW 10.4 mph) | - | 10SM |
| | KSFM 221755Z 26009KT 10SM CLR M02/M12 A2984 RMK AO1 11020 21070 57014 |
| 12:35 EST |  Clear | -2°C / 28°F | -12°C / 10°F | 47% | 1010 mb (29.83 in) | SSW 24 kph (SSW 15 mph) | - | 10SM |
| | KSFM 221735Z 25013G16KT 10SM CLR M02/M12 A2984 RMK AO1 |
| 12:15 EST |  Clear | -2°C / 28°F | -13°C / 9°F | 43% | 1011 mb (29.85 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 221715Z 27008KT 10SM CLR M02/M13 A2985 RMK AO1 |
| 11:55 EST |  Clear | -2°C / 28°F | -12°C / 10°F | 47% | 1011 mb (29.85 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KSFM 221655Z 27007KT 10SM CLR M02/M12 A2986 RMK AO1 |
| 11:35 EST |  Clear | -2°C / 28°F | -13°C / 9°F | 43% | 1011 mb (29.85 in) | SSW 19 kph (SSW 11.5 mph) | - | 10SM |
| | KSFM 221635Z 26010KT 10SM CLR M02/M13 A2986 RMK AO1 |
| 11:15 EST |  Clear | -3°C / 27°F | -13°C / 9°F | 46% | 1011 mb (29.85 in) | W 22 kph (W 13.8 mph) | - | 10SM |
| | KSFM 221615Z 28012G15KT 10SM CLR M03/M13 A2986 RMK AO1 |
| 10:55 EST |  Clear | -3°C / 27°F | -13°C / 9°F | 46% | 1012 mb (29.88 in) | W 19 kph (W 11.5 mph) | - | 10SM |
| | KSFM 221555Z 27010G14KT 10SM CLR M03/M13 A2987 RMK AO1 |
| 10:35 EST |  Clear | -3°C / 27°F | -13°C / 9°F | 46% | 1012 mb (29.88 in) | WNW 17 kph (WNW 10.4 mph) | - | 10SM |
| | KSFM 221535Z 29009KT 10SM CLR M03/M13 A2987 RMK AO1 |
| 10:15 EST |  Clear | -4°C / 25°F | -13°C / 9°F | 50% | 1012 mb (29.88 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 221515Z 27008KT 10SM CLR M04/M13 A2988 RMK AO1 |
| 09:55 EST |  Clear | -4°C / 25°F | -13°C / 9°F | 50% | 1012 mb (29.88 in) | W 19 kph (W 11.5 mph) | - | 10SM |
| | KSFM 221455Z 27010KT 10SM CLR M04/M13 A2988 RMK AO1 52014 |
| 09:35 EST |  Clear | -4°C / 25°F | -14°C / 7°F | 46% | 1012 mb (29.88 in) | SSW 22 kph (SSW 13.8 mph) | - | 10SM |
| | KSFM 221435Z 26012KT 10SM CLR M04/M14 A2987 RMK AO1 |
| 09:15 EST |  Clear | -5°C / 23°F | -14°C / 7°F | 50% | 1012 mb (29.88 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 221415Z 28009KT 10SM CLR M05/M14 A2987 RMK AO1 |
| 08:55 EST |  Clear | -5°C / 23°F | -14°C / 7°F | 50% | 1012 mb (29.88 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 221355Z 27009KT 10SM CLR M05/M14 A2987 RMK AO1 |
| 08:35 EST |  Clear | -6°C / 21°F | -14°C / 7°F | 54% | 1011 mb (29.85 in) | WNW 9 kph (WNW 5.8 mph) | - | 10SM |
| | KSFM 221335Z 29005KT 10SM CLR M06/M14 A2986 RMK AO1 |
| 08:15 EST |  Clear | -6°C / 21°F | -14°C / 7°F | 54% | 1011 mb (29.85 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KSFM 221315Z 28007KT 10SM CLR M06/M14 A2986 RMK AO1 |
| 07:55 EST |  Clear | -7°C / 19°F | -15°C / 5°F | 53% | 1011 mb (29.85 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 221255Z 27008KT 10SM CLR M07/M15 A2986 RMK AO1 |
| 07:35 EST |  Clear | -7°C / 19°F | -15°C / 5°F | 53% | 1011 mb (29.85 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KSFM 221235Z 28005KT 10SM CLR M07/M15 A2985 RMK AO1 |
| 07:15 EST |  Clear | -7°C / 19°F | -14°C / 7°F | 58% | 1010 mb (29.83 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KSFM 221215Z 27007KT 10SM CLR M07/M14 A2984 RMK AO1 |
| 06:55 EST |  Partly Cloudy | -7°C / 19°F | -15°C / 5°F | 53% | 1010 mb (29.83 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KSFM 221155Z 27005KT 10SM FEW075 M07/M15 A2984 RMK AO1 11050 21070 52020 |
| 06:35 EST |  Mostly Cloudy | -7°C / 19°F | -14°C / 7°F | 58% | 1010 mb (29.83 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KSFM 221135Z 27005KT 10SM BKN075 M07/M14 A2982 RMK AO1 |
| 06:15 EST |  Clear | -6°C / 21°F | -14°C / 7°F | 54% | 1009 mb (29.8 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 221115Z 27008KT 10SM CLR M06/M14 A2981 RMK AO1 |
| 05:55 EST |  Partly Cloudy | -6°C / 21°F | -15°C / 5°F | 49% | 1009 mb (29.8 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 221055Z 27006KT 10SM FEW075 M06/M15 A2980 RMK AO1 |
| 05:35 EST |  Mostly Cloudy | -6°C / 21°F | -14°C / 7°F | 54% | 1009 mb (29.8 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 221035Z 27006KT 10SM BKN075 M06/M14 A2980 RMK AO1 |
| 05:15 EST |  Mostly Cloudy | -6°C / 21°F | -14°C / 7°F | 54% | 1009 mb (29.8 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 221015Z 28006KT 10SM BKN075 BKN095 M06/M14 A2979 RMK AO1 |
| 04:55 EST |  Mostly Cloudy | -6°C / 21°F | -14°C / 7°F | 54% | 1009 mb (29.8 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KSFM 220955Z 27007KT 10SM BKN095 M06/M14 A2979 RMK AO1 |
| 04:35 EST |  Partly Cloudy | -6°C / 21°F | -14°C / 7°F | 54% | 1008 mb (29.77 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 220935Z 27008KT 10SM SCT095 M06/M14 A2978 RMK AO1 |
| 04:15 EST |  Mostly Cloudy | -6°C / 21°F | -14°C / 7°F | 54% | 1008 mb (29.77 in) | SSW 17 kph (SSW 10.4 mph) | - | 10SM |
| | KSFM 220915Z 26009KT 10SM BKN085 M06/M14 A2978 RMK AO1 |
| 03:55 EST |  Overcast | -6°C / 21°F | -14°C / 7°F | 54% | 1008 mb (29.77 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KSFM 220855Z 27007KT 10SM OVC085 M06/M14 A2978 RMK AO1 52020 |
| 03:35 EST |  Overcast | -5°C / 23°F | -14°C / 7°F | 50% | 1008 mb (29.77 in) | SSW 17 kph (SSW 10.4 mph) | - | 10SM |
| | KSFM 220835Z 26009KT 10SM OVC085 M05/M14 A2977 RMK AO1 |
| 03:15 EST |  Overcast | -5°C / 23°F | -14°C / 7°F | 50% | 1008 mb (29.77 in) | SSW 13 kph (SSW 8.1 mph) | - | 10SM |
| | KSFM 220815Z 26007KT 10SM OVC085 M05/M14 A2977 RMK AO1 |
| 02:55 EST |  Overcast | -5°C / 23°F | -14°C / 7°F | 50% | 1008 mb (29.77 in) | SSW 13 kph (SSW 8.1 mph) | - | 10SM |
| | KSFM 220755Z 26007KT 10SM OVC085 M05/M14 A2977 RMK AO1 |
| 02:35 EST |  Overcast | -5°C / 23°F | -14°C / 7°F | 50% | 1008 mb (29.77 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KSFM 220735Z 27005KT 10SM OVC085 M05/M14 A2976 RMK AO1 |
| 02:15 EST |  Overcast | -5°C / 23°F | -13°C / 9°F | 54% | 1008 mb (29.77 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 220715Z 27006KT 10SM OVC085 M05/M13 A2976 RMK AO1 |
| 01:55 EST |  Overcast | -5°C / 23°F | -14°C / 7°F | 50% | 1007 mb (29.74 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KSFM 220655Z 27007KT 10SM OVC085 M05/M14 A2975 RMK AO1 |
| 01:35 EST |  Overcast | -5°C / 23°F | -13°C / 9°F | 54% | 1007 mb (29.74 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KSFM 220635Z 27006KT 10SM OVC085 M05/M13 A2974 RMK AO1 |
| 01:15 EST |  Overcast | -5°C / 23°F | -14°C / 7°F | 50% | 1007 mb (29.74 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 220615Z 27009KT 10SM FEW065 OVC075 M05/M14 A2973 RMK AO1 |
| 00:55 EST |  Overcast | -5°C / 23°F | -13°C / 9°F | 54% | 1006 mb (29.71 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 220555Z 27008KT 10SM SCT065 OVC075 M05/M13 A2972 RMK AO1 11030 21050 52014 |
| 00:35 EST |  Overcast | -5°C / 23°F | -13°C / 9°F | 54% | 1006 mb (29.71 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KSFM 220535Z 27008KT 10SM OVC075 M05/M13 A2972 RMK AO1 |
| 00:15 EST |  Overcast | -4°C / 25°F | -13°C / 9°F | 50% | 1006 mb (29.71 in) | W 17 kph (W 10.4 mph) | - | 10SM |
| | KSFM 220515Z 27009G14KT 10SM OVC075 M04/M13 A2972 RMK AO1 |