Climate
La Mesa 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 | 67°F | 46°F | 2.3 in | 7 |
| February | 67°F | 47°F | 2.6 in | 8 |
| March | 69°F | 50°F | 1.6 in | 7 |
| April | 71°F | 52°F | 0.80 in | 5 |
| May | 72°F | 57°F | 0.30 in | 3 |
| June | 75°F | 60°F | 0.10 in | 1 |
| July | 80°F | 64°F | 0.10 in | 1 |
| August | 82°F | 65°F | 0.00 in | 0 |
| September | 81°F | 64°F | 0.20 in | 1 |
| October | 78°F | 58°F | 0.50 in | 4 |
| November | 73°F | 50°F | 0.90 in | 6 |
| December | 67°F | 45°F | 1.6 in | 7 |
NOAA U.S. Climate Normals 1991–2020, San Diego Montgomery Fld, Ca Us (7.5 mi away, 417 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in La Mesa?
August, with an average high of 82°F and low of 65°F.
What is the coldest month in La Mesa?
December, with an average low of 45°F and high of 67°F.
When does it rain most in La Mesa?
February is the wettest month, averaging 2.6 in of precipitation; the year totals about 11.0 inches.
What is the best time to visit La Mesa?
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 San Diego Montgomery Fld weather station, 7.5 miles from downtown: 30-year averages, not a forecast.