Today's Almanac:Dawn at 05:21, Dusk at 21:07, daylight hours: 15:46
Sunrise at 05:52, Sunset at 20:36, day length: 14:44
Moonrise at 06:58,
Moonset at 22:14, Moon Phase: Waxing Crescent
Pacificaweather.com recordkeeping began on November 1, 2001. However, as a personal weather station, there are significant gaps in the historical data. Of over 150 months of elapsed time, 13 months are missing, or about 8%; in particular, data is missing from June-August 2005, July 2008, and February-September of 2009. The remaining 92% of records are present, but, being a personal weather station, instrument inaccuracy and data errors could be present in some of this data as well. To cross-check nearby weather data for a record or a specific date, consult the official NWS weather records for San Francisco at http://www.nws.noaa.gov/climate/xmacis.php?wfo=mtr.
Temperature and Humidity | ||
Highest Temperature | 79.0 °F | at 3:08 PM on 17 January 2021 |
Lowest Temperature | 37.9 °F | at 5:17 AM on 02 January 2022 |
Highest Dew Point | 63.4 °F | at 1:29 PM on 25 January 2020 |
Lowest Dew Point | 19.5 °F | at 2:30 PM on 18 January 2021 |
Highest Apparent Temperature | 79.5 °F | at 3:15 PM on 17 January 2021 |
Lowest Apparent Temperature | 30.1 °F | at 6:19 AM on 25 January 2021 |
Lowest Wind Chill Temperature | 30.3 °F | at 7:30 PM on 26 January 2021 |
Highest Heat Index | 79.0 °F | at 3:08 PM on 17 January 2021 |
Highest Minimum | 53.3 °F | at 12:08 PM on 16 January 2019 |
Lowest Maximum | 47.7 °F | at 10:59 AM on 24 January 2021 |
Highest Humidity | 100 % | at 5:55 PM on 06 January 2019 |
Lowest Humidity | 12 % | at 2:30 PM on 18 January 2021 |
Highest Daily Range | 33.4 °F | on 11 January 2012 |
Lowest Daily Range | 3.7 °F | on 06 January 2022 |
Rainfall | ||
Highest Rain Rate | 17.45 in/hr | at 6:20 PM on 10 January 2017 |
Highest Hourly Rainfall | 0.43 in | at 9:31 AM on 16 January 2020 |
Highest Daily Rainfall | 0.98 in | on 16 January 2020 |
Highest Monthly Rainfall | 3.68 in | January 2019 |
Longest Dry Period | 13 days | to 21 January 2021 |
Longest Wet Period | 10 days | to 17 January 2019 |
Wind | ||
Highest Wind Gust | 58.0 mph | at 2:51 PM on 16 January 2019 |
Highest Wind Speed Average | 28.0 mph | at 7:46 PM on 16 January 2019 |
Highest Daily Wind Run | 307.1 miles | on 25 January 2021 |
Pressure | ||
Lowest Pressure (sl) | 29.557 in | at 12:11 AM on 27 January 2021 |
Highest Pressure (sl) | 30.581 in | at 10:30 AM on 05 January 2020 |