San Bruno Post Office, CA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Mostly Clear 43°F
Feels Like 43°F  
Humidity 98% Dew Point 43°F Wind Calm Barometer 30.15 in.
Report from a personal weather station 0.8 mi. SSE of central San Bruno Post Office
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Point Forecast at a Glance

SunDec 14
Sun Dec 14: Partly Cloudy, Low 47F
 
47
MonDec 15
Mon Dec 15: Mostly Cloudy, High 56F, Low 54F
56
54
TueDec 16
Tue Dec 16: Rain, High 61F, Low 58F
30%
61
58
WedDec 17
Wed Dec 17: Rain Likely, High 60F, Low 52F
70%
60
52
ThuDec 18
Thu Dec 18: Rain, High 58F, Low 54F
50%
58
54
FriDec 19
Fri Dec 19: Rain, High 60F, Low 54F
50%
60
54
SatDec 20
Sat Dec 20: Rain, High 59F, Low 54F
50%
59
54

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7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 56°F to 61°F. Unsettled weather expected with rain likely on at least 5 days.

Climate Context

This week's forecast shows temperatures running 1°F above the historical average for December. Normal highs for this period are around 58°F with lows around 42°F.

This Date in Weather History

1924 - The temperature at Helena, MT, plunged 79 degrees in 24 hours, and 88 degrees in 34 hours. The mercury plummeted from 63 above to 25 below zero. At Fairfield MT the temperature plunged 84 degrees in just 12 hours, from 63 at Noon to 21 below zero at midnight.

More on this and other weather history

San Bruno Post Office, CA 7 Day Weather Forecast Details

Sunday Dec 14

Partly Cloudy

Night: Partly cloudy, with a low around 47. North northwest wind 3 to 5 mph.

Monday Dec 15

Mostly Cloudy

Day: Mostly cloudy, then gradually becoming sunny, with a high near 56. North northwest wind 3 to 6 mph.

Partly Cloudy

Night: Patchy fog after 1am. Otherwise, increasing clouds, with a low around 54. West northwest wind 3 to 8 mph.

Tuesday Dec 16

Rain

Day: A 30 percent chance of rain, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 61. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

Rain Likely

Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 58. West southwest wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Dec 17

Rain Likely

Day: Rain likely, mainly before 10am. Mostly cloudy, with a high near 60. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Rain

Night: A 20 percent chance of rain. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 52.

Thursday Dec 18

Rain

Day: A chance of rain, mainly after 10am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 58.

Rain

Night: A chance of rain. Mostly cloudy, with a low around 54.

Friday Dec 19

Rain

Day: Rain, mainly after 10am. Cloudy, with a high near 60.

Rain

Night: Rain. Mostly cloudy, with a low around 54.

Saturday Dec 20

Rain

Day: A chance of rain. Mostly cloudy, with a high near 59.

Rain Likely

Night: Rain likely. Mostly cloudy, with a low around 54.

Sunday Dec 21

Rain Likely

Day: Rain likely. Cloudy, with a high near 59.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.