La Mesa Weather Forecast
- 46
- 57
Rain Showers
- 40
- 58
Mostly Sunny
- 47
- 66
Mostly Cloudy
- 49
- 71
Partly Sunny
- 53
- 74
Chance Rain Showers
- 54
- 75
Chance Rain Showers
Today 19 Feb San Diego County Inland Valleys
Numerous Showers this Morning, then rain this afternoon. Rain may be heavy at Times this afternoon. Highs around 57 in the western Valleys to 47 to 52 near the Foothills. Areas of Winds south 10 to 15 Mph with Gusts to 25 Mph becoming southwest 15 to 25 Mph with Gusts to 40 Mph this afternoon.
Tonight 19 Feb San Diego County Inland Valleys
Widespread Showers. Lows 37 to 43. Areas of Winds west 10 to 20 Mph. Gusts to 35 Mph. Becoming 25 Mph overnight.
La Mesa Temperature Statistics
February Temperature
Gillespie Field Airport (5 miles)
Lowest 1 February, 2026
42.8 °FAverage February
56 °FHighest 4 February, 2026
87.8 °F
Climate (2021–Present)
Gillespie Field Airport (5 miles)
Average Low 2021–2026
53.2 °FAverage 2021–2026
60.3 °FAverage High 2021–2026
75.9 °F