Monthly climate guide
Fresno weather in August
August in Fresno is typically very hot, with average daytime highs around 40°C (103°F) and night-time lows near 20°C (69°F). The month usually brings about 0 mm of rain (very dry) and is mostly sunny. Daytime highs are about the same as July and 4°C warmer than September.
What stands out in August
- Temperatures are falling — expect highs around 4°C lower by September.
- August is Fresno's second warmest month.
- It's one of the drier months, with about 100% less rain than Fresno's average.
- Evenings cool off sharply: the daily range is around 19°C, so pack a layer.
It's usually the driest month of the year.
Avg high
40°C
103°F
Avg low
20°C
69°F
Rainfall
0 mm
very dry
Humidity
28%
relative
Sky
15%
cloud · mostly sunny
Fresno weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 16°C / 62°F | 6°C / 42°F | 55 mm | 72% | 60% |
| February | 18°C / 64°F | 6°C / 42°F | 44 mm | 71% | 43% |
| March | 20°C / 69°F | 8°C / 46°F | 59 mm | 69% | 48% |
| April | 25°C / 77°F | 10°C / 50°F | 25 mm | 59% | 35% |
| May | 30°C / 85°F | 13°C / 55°F | 11 mm | 46% | 29% |
| June | 37°C / 98°F | 17°C / 63°F | 4 mm | 31% | 15% |
| July | 40°C / 105°F | 21°C / 69°F | 1 mm | 26% | 15% |
| August | 40°C / 103°F | 20°C / 69°F | 0 mm | 28% | 15% |
| September | 36°C / 96°F | 18°C / 64°F | 1 mm | 33% | 19% |
| October | 29°C / 84°F | 14°C / 56°F | 10 mm | 41% | 26% |
| November | 21°C / 70°F | 8°C / 47°F | 29 mm | 58% | 41% |
| December | 16°C / 60°F | 5°C / 41°F | 42 mm | 69% | 53% |
What to pack for August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
- Sunglasses
Is August a good time to visit Fresno?
Compare the months in the chart above to find your ideal window.
Best time to visit Fresno →Other United States cities in August
Cite or embed this data
Writing about this destination? Copy a ready-made citation or embed a live widget — free, just keep the link.
Fresno weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/fresno/august
<a href="https://weathercompare.eu/weather/usa/fresno/august">Fresno weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/fresno" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Fresno weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/fresno/august">Fresno weather in August</a> – WeatherCompare</p>
Fresno in August: quick answers
Is August a good time to visit Fresno?
It can be, if you like heat: August highs in Fresno are around 40°C. Good for the beach; plan sightseeing for early morning and evening.
How warm is Fresno in August?
Average highs are about 40°C (103°F) and average lows about 20°C (69°F), based on 10 years of daily data.
Does it rain a lot in Fresno in August?
Fresno typically gets around 0 mm of rain in August — very dry. It's usually the driest month of the year.
Figures are long-term averages for the area around Fresno (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.