Galena weather live forecast

Today's maximum temperature in Galena is expected to be 31°C. Select a day from the live weather forecast for Galena, Illinois, USA for more weather parameters.

Wednesday
27th May
31

15

12

8
Thursday
28th May
27

14

13

8
Friday
29th May
28

10

15

8
Saturday
30th May
28

14

11

8
Sunday
31st May
26

13

14

8

5-day weather forecast updated at 04:02 on Wednesday 27th May 2026 GMT

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The 5-day weather forecast for Illinois (Galena) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Galena weather forecast by day

Below are the detailed weather forecasts for Galena for the next 5 days.

Galena weather for Wednesday 27th May 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a light breeze of 9 kph from the north-east.

31
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
12
hours of sunshine
8
UV index (Very High)
12
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from NE

Galena weather for Thursday 28th May 2026

Expect scattered clouds in Galena, Illinois with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

27
°C maximum temperature
14
°C minimum temperature
scattered clouds
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

Galena weather for Friday 29th May 2026

Expect clear skies in Galena, Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.

28
°C maximum temperature
10
°C minimum temperature
clear skies
15
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
5
kph wind from E

Galena weather for Saturday 30th May 2026

Expect scattered clouds in Galena, Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

28
°C maximum temperature
14
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

Galena weather for Sunday 31st May 2026

Expect clear skies in Galena, Illinois with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the east.