Fresno, CA Climate & Monthly Averages
The climate of Fresno
Weather in Fresno is shaped by its semi-arid climate - expect big day-to-night temperature swings and modest rainfall. July afternoons typically reach 103°F (40°C), while December highs hover near 57°F (14°C). Annual precipitation averages 15.3 inches (388 mm) over about 42 rainy days.
Climate quick facts
- Hottest month: July - highs near 103°F (40°C)
- Coldest month: December - highs near 57°F (14°C)
- Record high: 118°F (48°C) · Record low: 26°F (-3°C) (2015–2024)
- Wettest month: March (8 rainy days) · Sunniest: July (13.9 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 103°F (40°C) and overnight lows stay near 73°F (23°C). The coolest month is December, with typical highs of 57°F (14°C) and lows around 40°F (4°C). Based on 2015–2024 weather data, temperatures have reached as high as 118°F (48°C) and dropped as low as 26°F (-3°C).
Rain, sun and snow
March is usually the wettest month. It brings about 3.3 inches (84 mm) of rain over 8 days, while July is the driest. July brings the most sunshine, averaging 13.9 hours of sun a day. Snowfall is rare but not unheard of.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 58° | 40° | 8 | 3.0 in | 7.4 h/day | 79% |
| February | 63° | 41° | 7 | 2.4 in | 9.1 h/day | 70% |
| March | 67° | 46° | 8 | 3.3 in | 9.9 h/day | 66% |
| April | 76° | 51° | 4 | 1.1 in | 11.6 h/day | 53% |
| May | 85° | 58° | 2 | 0.6 in | 13.2 h/day | 42% |
| June | 96° | 67° | 0 | 0.0 in | 13.7 h/day | 31% |
| July | 103° | 73° | 0 | 0.0 in | 13.9 h/day | 27% |
| August | 101° | 72° | 0 | 0.1 in | 12.9 h/day | 31% |
| September | 94° | 65° | 0 | 0.1 in | 11.7 h/day | 35% |
| October | 82° | 55° | 1 | 0.4 in | 10.5 h/day | 43% |
| November | 67° | 44° | 4 | 1.5 in | 8.9 h/day | 63% |
| December | 57° | 40° | 6 | 2.7 in | 7.1 h/day | 77% |
Fresno month by month
Fresno weather in January
January brings highs around 58°F (15°C), lows near 40°F (4°C), about 8 wet days.
Fresno weather in February
February brings highs around 63°F (17°C), lows near 41°F (5°C), about 7 wet days.
Fresno weather in March
March brings highs around 67°F (20°C), lows near 46°F (8°C), about 8 wet days - typically the wettest month of the year in Fresno.
Fresno weather in April
April brings highs around 76°F (25°C), lows near 51°F (11°C), about 4 wet days.
Fresno weather in May
May brings highs around 85°F (29°C), lows near 58°F (15°C), about 2 wet days.
Fresno weather in June
June brings highs around 96°F (36°C), lows near 67°F (20°C), about 0 wet days.
Fresno weather in July
July brings highs around 103°F (40°C), lows near 73°F (23°C), about 0 wet days - typically the hottest month and the driest month and the sunniest month of the year in Fresno.
Fresno weather in August
August brings highs around 101°F (38°C), lows near 72°F (22°C), about 0 wet days.
Fresno weather in September
September brings highs around 94°F (34°C), lows near 65°F (19°C), about 0 wet days.
Fresno weather in October
October brings highs around 82°F (28°C), lows near 55°F (13°C), about 1 wet days.
Fresno weather in November
November brings highs around 67°F (19°C), lows near 44°F (7°C), about 4 wet days.
Fresno weather in December
December brings highs around 57°F (14°C), lows near 40°F (4°C), about 6 wet days - typically the coldest month of the year in Fresno.
Seasons in Fresno
Spring (March through May)
Spring in Fresno is mild and warm, with daytime highs averaging 76°F (24°C) and nights around 52°F (11°C); rain falls on about 14 days over the three months.
Summer (June through August)
Summer in Fresno is intensely hot, with daytime highs averaging 100°F (38°C) and nights around 71°F (21°C); precipitation is infrequent.
Fall (September through November)
Fall in Fresno runs hot, with daytime highs averaging 81°F (27°C) and nights around 55°F (13°C); precipitation is infrequent.
Winter (December through February)
Winter in Fresno is mild, with daytime highs averaging 60°F (15°C) and nights around 40°F (5°C); expect showers on roughly 21 days across the season.
Climate questions, answered
What is the average temperature in Fresno?
Is Fresno hot in summer?
Is Fresno cold in winter?
How many rainy days does Fresno get in a year?
Best time to visit Fresno
The best time to visit Fresno is generally October to November and February, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 72°F (22°C).
Pack for Fresno with lightweight, breathable clothing and strong sun protection for the hot months; a warm jacket and layers for the cooler season. Evenings can feel noticeably cooler than afternoons - July nights average 73°F (23°C).
Fresno temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.