San Jose weather by month
San Jose runs from an average daily high of 60°F in December to 81°F in August, with overnight lows between 42°F (December) and 59°F (August).
January is the wettest month (2.8 inches) and July the driest (0.0 inches); about 13 inches fall in a normal year.
By a simple rule (average highs of 65-88°F, lows of 40°F or more and rain at or under the yearly average), the comfortable months for San Jose day trips are Apr-Oct.
Month by month in San Jose
| Month | Average high | Average low | Rain (in) | Day trips open |
|---|---|---|---|---|
| January | 60°F | 42°F | 2.8 | 166 of 166 |
| February | 62°F | 44°F | 2.7 | 166 of 166 |
| March | 66°F | 46°F | 2.1 | 166 of 166 |
| April best | 69°F | 48°F | 1.1 | 166 of 166 |
| May best | 74°F | 52°F | 0.4 | 166 of 166 |
| June best | 79°F | 56°F | 0.2 | 166 of 166 |
| July best | 81°F | 58°F | 0.0 | 166 of 166 |
| August best | 81°F | 59°F | 0.1 | 166 of 166 |
| September best | 81°F | 57°F | 0.1 | 166 of 166 |
| October best | 76°F | 53°F | 0.5 | 166 of 166 |
| November | 66°F | 46°F | 1.3 | 166 of 166 |
| December | 60°F | 42°F | 2.3 | 166 of 166 |
The numbers are from NOAA's station at San Jose, Ca (USW00023293). Climate normals 1991-2020: long-run averages, not a forecast. "Day trips open" counts the places within 3 hours that are open or in season on the 15th, from our own place data.
Questions about San Jose weather
What is the best time to visit San Jose?
By a simple rule (average highs of 65-88°F, lows of 40°F or more and rain at or under the yearly average), the comfortable months for San Jose day trips are Apr-Oct.
What is the hottest and coldest month in San Jose?
August is the hottest (average high 81°F) and December the coolest (average low 42°F).
When does it rain the most in San Jose?
January is the wettest month (2.8 inches) and July the driest (0.0 inches).
Does it snow in San Jose?
The station does not record snowfall as a normal; check the forecast for mountain areas.
Where do these weather numbers come from?
The numbers are from NOAA's station at San Jose, Ca (USW00023293). They are 1991-2020 climate normals (long-run averages), not a forecast. For today's weather use the National Weather Service forecast.
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