Galena weather in June 2026

Q: How hot is it in Galena in June?

Daytime temperatures usually reach 27°C in Galena in June with low heat and humidity, falling to 14°C at night.

Q: How sunny is it in Galena in June?

There are normally 10 hours of bright sunshine each day in Galena in June - that's 68% of daylight hours.

Q: How warm is the sea around Galena in June?

The average sea temperature around Galena in June is 12°C.

Q: Does it rain in Galena in June?

There are usually 10 days with some rain in Galena in June and the average monthly rainfall is 96mm.

Expect daytime maximum temperatures of 27°C in Galena, Illinois in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 10 days with some rainfall and typically 109 mm of rainfall in the month.

27
27°C max day temperature
10
10 hours of sunshine per day
10
10 days with some rainfall
13
13°C min night temperature
15
15 hours of daylight per day
L
Low heat & humidity
109
109 mm of monthly rainfall
9
9 (Very High) UV index

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The June weather guide for Illinois (Galena) 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 / mm) | Imperial (°F / inches)