La Mesa, California Climate by Month
La Mesa, California, United States
Hot summers and mild winters, with little rain, mostly from December to March.
Hot summers and mild winters, with little rain, mostly from December to March: that's La Mesa's climate in short. Afternoon highs range from 69°F (21°C) in February to 86°F (30°C) in August, and December nights average 45°F (7°C). It gets only 11 in (288 mm) of rain a year. May to September are almost completely dry.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 45°F(7°C)
- Average low, December
- Rain per year
- 11 in(288 mm)
- Wettest: February
- Humidity
- 55%
- Sunniest: June
Best and worst months in La Mesa
Best for weatherApril, May and November are the best time for weather in La Mesa: highs near 75°F (24°C) and about 0.8 in (21 mm) of rain a month.
Least pleasantAugust and September are the least pleasant; August is the hottest, with highs of 86°F (30°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
La Mesa weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 69°F(21°C) | 46°F(8°C) | 2.0 in(51 mm) | 55% | 3.1 |
| FebFebruary | 69°F(21°C) | 46°F(8°C) | 2.4 in(61 mm) | 55% | 3.5 |
| MarMarch | 71°F(22°C) | 48°F(9°C) | 1.8 in(45 mm) | 57% | 5.0 |
| AprAprilBest | 74°F(24°C) | 51°F(11°C) | 1.1 in(27 mm) | 57% | 5.9 |
| MayMayBest | 76°F(24°C) | 55°F(13°C) | 0.3 in(8 mm) | 61% | 6.4 |
| JunJune | 79°F(26°C) | 58°F(15°C) | 0.1 in(2 mm) | 58% | 6.8 |
| JulJuly | 84°F(29°C) | 62°F(17°C) | 0.0 in(1 mm) | 61% | 6.7 |
| AugAugust | 86°F(30°C) | 63°F(17°C) | 0.1 in(2 mm) | 58% | 6.5 |
| SepSeptember | 85°F(30°C) | 62°F(17°C) | 0.2 in(4 mm) | 56% | 5.5 |
| OctOctober | 81°F(27°C) | 56°F(14°C) | 0.4 in(11 mm) | 50% | 4.3 |
| NovNovemberBest | 76°F(24°C) | 50°F(10°C) | 1.1 in(28 mm) | 46% | 3.4 |
| DecDecember | 69°F(21°C) | 45°F(7°C) | 1.9 in(48 mm) | 50% | 2.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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