Climate
Palo Alto weather by month
Average highs, lows, rain and snow for every month, from 30 years of weather records.
Average temperatures
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Best time to visit: June, July, August, when highs are mild and rain is lightest.
Month by month
| Month | High | Low | Rain | Wet days |
|---|---|---|---|---|
| January | 58°F | 39°F | 3.0 in | 10 |
| February | 61°F | 41°F | 3.2 in | 10 |
| March | 66°F | 44°F | 2.2 in | 8 |
| April | 70°F | 45°F | 1.0 in | 5 |
| May | 73°F | 50°F | 0.40 in | 3 |
| June | 79°F | 53°F | 0.10 in | 1 |
| July | 79°F | 56°F | 0.00 in | 0 |
| August | 79°F | 55°F | 0.00 in | 0 |
| September | 80°F | 53°F | 0.10 in | 1 |
| October | 74°F | 48°F | 0.60 in | 3 |
| November | 64°F | 43°F | 1.6 in | 6 |
| December | 58°F | 39°F | 3.0 in | 10 |
NOAA U.S. Climate Normals 1991–2020, Palo Alto, Ca Us (1 mi away, 25 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in Palo Alto?
September, with an average high of 80°F and low of 53°F.
What is the coldest month in Palo Alto?
December, with an average low of 39°F and high of 58°F.
When does it rain most in Palo Alto?
February is the wettest month, averaging 3.2 in of precipitation; the year totals about 15.2 inches.
What is the best time to visit Palo Alto?
For mild weather (highs between 65°F and 85°F) with the least rain, June, July, August.
Where do these numbers come from?
NOAA’s 1991–2020 U.S. Climate Normals for the Palo Alto weather station, 1 miles from downtown: 30-year averages, not a forecast.