Porterville Climate by Month
Porterville, California, United States
Very hot summers and cool winters, with little rain, mostly from November to March.
Very hot summers and cool winters, with little rain, mostly from November to March: that's Porterville's climate in short. Afternoon highs range from 59°F (15°C) in January to 100°F (38°C) in July, and December nights average 37°F (3°C). It gets only 9.5 in (241 mm) of rain a year. June to September are almost completely dry.
- Warmest month
- 100°F(38°C)
- Average high, July
- Coldest nights
- 37°F(3°C)
- Average low, December
- Rain per year
- 9.5 in(241 mm)
- Wettest: February
- Humidity
- 46%
- Sunniest: June
Best and worst months in Porterville
Best for weatherThe most comfortable weather comes in March and April, with highs around 74°F (24°C) and about 1.3 in (32 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; July is the hottest, with highs of 100°F (38°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 April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Porterville weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 59°F(15°C) | 38°F(4°C) | 1.6 in(41 mm) | 69% | 2.2 |
| FebFebruary | 65°F(18°C) | 41°F(5°C) | 1.7 in(43 mm) | 58% | 3.2 |
| MarMarchBest | 71°F(22°C) | 45°F(7°C) | 1.5 in(38 mm) | 55% | 4.8 |
| AprAprilBest | 78°F(26°C) | 48°F(9°C) | 1.0 in(26 mm) | 46% | 6.1 |
| MayMay | 86°F(30°C) | 55°F(13°C) | 0.4 in(10 mm) | 39% | 7.1 |
| JunJune | 94°F(35°C) | 61°F(16°C) | 0.1 in(2 mm) | 31% | 7.8 |
| JulJuly | 100°F(38°C) | 67°F(19°C) | 0.0 in(1 mm) | 33% | 7.5 |
| AugAugust | 99°F(37°C) | 65°F(18°C) | 0.0 in(0 mm) | 32% | 7.1 |
| SepSeptember | 94°F(35°C) | 60°F(15°C) | 0.0 in(1 mm) | 32% | 6.0 |
| OctOctober | 83°F(29°C) | 51°F(11°C) | 0.4 in(11 mm) | 39% | 4.3 |
| NovNovember | 69°F(21°C) | 42°F(6°C) | 1.1 in(29 mm) | 53% | 3.0 |
| DecDecember | 59°F(15°C) | 37°F(3°C) | 1.5 in(39 mm) | 62% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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