Galena weather live forecast

Today's maximum temperature in Galena is expected to be 20°C. Select a day from the live weather forecast for Galena, Illinois, USA for more weather parameters.

Wednesday
16th Sep
20

15

1

4
Thursday
17th Sep
23

18

2

2
Friday
18th Sep
22

16

3

4
Saturday
19th Sep
24

18

1

5
Sunday
20th Sep
20

16

0

2

5-day weather forecast updated at 04:03 on Wednesday 16th September 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 16th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a light breeze of 9 kph from the east.

20
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
42
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
9
kph wind from E

Galena weather for Thursday 17th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 23°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 33% chance of some rain and little or no wind of 5 kph from the north-east.

23
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
2
UV index (Low)
33
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
5
kph wind from NE

Galena weather for Friday 18th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 16 kph from the east.

22
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
79
% chance of some rain
<10
mm of rainfall expected
22
°C wind chill
16
kph wind from E

Galena weather for Saturday 19th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 83% chance of some rain and a gentle breeze of 14 kph from the north-east.

24
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
5
UV index (Moderate)
83
% chance of some rain
<20
mm of rainfall expected
24
°C wind chill
14
kph wind from NE

Galena weather for Sunday 20th September 2026

Expect mostly cloudy with light rain in Galena, Illinois with a maximum temperature of 20°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 15 kph from the east.