San Mateo, California Weather Forecast
Today in San Mateo: clear skies with a high near 69°F and a low around 55°F. Rain chance 2%. No day tops a 20% rain chance through Thursday. Highs run 66 to 73°F through Thursday.
Forecast updated 7:05 PM PDT, Oct 23
Active Weather Alerts
7-Day Forecast for San Mateo
Today 10/23
69°55°
Sat 10/24
73°52°
Sun 10/25
72°51°
Mon 10/26
68°53°
Tue 10/27
67°52°
Wed 10/28
68°51°
Thu 10/29
66°53°
Next 24 Hours
| Now | Sat12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  | | | | | | | | | | | | | | | | | | | | | | | |
| Temp | 57° | 57° | 56° | 55° | 54° | 53° | 53° | 52° | 52° | 52° | 57° | 60° | 63° | 66° | 68° | 70° | 72° | 73° | 72° | 67° | 63° | 60° | 58° | 57° |
| Rain | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Wind | W 4 | W 3 | WNW 2 | WNW 2 | W 2 | W 2 | SW 2 | SSW 2 | SSE 2 | SE 3 | ESE 3 | ENE 4 | NE 5 | NNE 5 | N 4 | N 4 | NNW 4 | NW 4 | WNW 5 | WNW 5 | W 3 | W 2 | W 1 | WSW 0 |
Growing Conditions
Growing degree days
2,235
since Apr 1, base 50°F
Rain, last 30 days
0.21 in
model analysis
Rain, year to date
13.18 in
since Jan 1
2-inch soil temperature
61°F
yesterday, daily average
Reference ET, last 7 days
0.74 in
FAO-56 grass reference
Through Oct 22. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for San Mateo →
Current Stats & Observations
NWS Forecast
About San Mateo Weather
San Mateo sits at about 26 feet above sea level in San Mateo County, California. About 104,430 people live in the San Mateo area. Official forecasts and warnings for the area come from the National Weather Service MTR office, and the nearest NEXRAD radar site is KMUX. The city is in USDA plant hardiness zone 10a, where the coldest winter night typically falls between 30 to 35°F. Freezing temperatures are rare here.
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