Galena weather live forecast

Today's maximum temperature in Galena is expected to be 21°C. Select a day from the live weather forecast for Galena, Illinois, USA for more weather parameters.

Friday
18th Sep
21

15

2

5
Saturday
19th Sep
23

18

2

3
Sunday
20th Sep
19

15

3

3
Monday
21st Sep
16

12

1

1
Tuesday
22nd Sep
16

11

1

3

5-day weather forecast updated at 04:03 on Friday 18th 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 Friday 18th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a gentle breeze of 16 kph from the east.

21
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
5
UV index (Moderate)
64
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
16
kph wind from E

Galena weather for Saturday 19th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 40-50 mm of rainfall expected with 74% chance of some rain and a light breeze of 12 kph from the south-east.

23
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
3
UV index (Moderate)
74
% chance of some rain
<50
mm of rainfall expected
0
no heat & humidity
12
kph wind from SE

Galena weather for Sunday 20th September 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 19 kph from the north-east.

19
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
3
UV index (Moderate)
56
% chance of some rain
<20
mm of rainfall expected
19
°C wind chill
19
kph wind from NE

Galena weather for Monday 21st September 2026

Expect overcast skies in Galena, Illinois with a maximum temperature of 16°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-east.

16
°C maximum temperature
12
°C minimum temperature
overcast skies
1
hour of sunshine
1
UV index (Low)
0
mm of rainfall expected
16
°C wind chill
19
kph wind from NE

Galena weather for Tuesday 22nd September 2026

Expect mostly cloudy with light rain in Galena, Illinois with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 22% chance of some rain and a gentle breeze of 17 kph from the north-east.