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Marion weather in August 2025
Expect 88°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Marion in August. Check more long-term weather averages for Marion in August before you book your next holiday to Illinois in 2025/2026.
- 8888°F max day temperature
- 10 hours of sunshine per day
- 88 days with some rainfall
- 6464°F min night temperature
- 1414 hours of daylight per day
- HHigh heat & humidity
- 3.53.5 inches of monthly rainfall
- 99 (Very High) UV index
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Marion by month
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Recommended for Illinois
The August weather guide for Illinois (Marion) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C) | Imperial (°F)
More about the USA
How hot is it in Marion in August?
Daytime temperatures usually reach 88°F in Marion in August with high heat and humidity, falling to 64°F at night.
How sunny is it in Marion in August?
There are normally 10 hours of bright sunshine each day in Marion in August - that's 70% of daylight hours.
Does it rain in Marion in August?
There are usually 8 days with some rain in Marion in August and the average monthly rainfall is 3.5 inches.
Marion August sunrise & sunset times
Browse the sunrise and sunset times for Marion in August 2025. Select a month to view Marion sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 05:00 | 19:04 |
Saturday, 16th August 2025 | 05:12 | 18:47 |
Sunday, 31st August 2025 | 05:25 | 18:26 |
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