Porterville Weather Forecast
- 72
- 99
Hot
- 71
- 97
Hot
- 71
- 96
Chance Thunderstorms
- 70
- 96
Mostly Sunny
- 67
- 92
Mostly Sunny
- 64
- 88
Mostly Sunny
Today 19 Sep Kemper
Sunny. Highs in the upper 90s. Northwest Winds around 5 Mph, becoming north in the afternoon. Heat index Values up to 105.
Tonight 19 Sep Kemper
Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 70s. Light and variable Winds, becoming southwest around 5 Mph after midnight.
Porterville Temperature Statistics
September Temperature
Meridian, Meridian Naval Air Station - McCain Field (9.9 miles)
Lowest 10 September, 2026
69.1 °FAverage September
81.6 °FHighest 6 September, 2026
100 °F
Climate (2021–2026)
Meridian, Meridian Naval Air Station - McCain Field (9.9 miles)
Average Low 2021–2026
55.2 °FAverage 2021–2026
66 °FAverage High 2021–2026
77.7 °F