Galena weather live forecast

Today's maximum temperature in Galena is expected to be 26°C. Select a day from the live weather forecast for Galena, Illinois, USA for more weather parameters.

Friday
15th May
26

14

11

8
Saturday
16th May
28

16

8

8
Sunday
17th May
29

17

5

7
Monday
18th May
28

20

5

4
Tuesday
19th May
23

14

9

6

5-day weather forecast updated at 04:02 on Friday 15th 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 Friday 15th May 2026

Expect sunshine and showers in Galena, Illinois with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a gentle breeze of 18 kph from the south.

26
°C maximum temperature
14
°C minimum temperature
sunshine and showers
11
hours of sunshine
8
UV index (Very High)
36
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
18
kph wind from S

Galena weather for Saturday 16th May 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 5-10 mm of rainfall expected with 37% chance of some rain and a light breeze of 8 kph from the east.

28
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
37
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
8
kph wind from E

Galena weather for Sunday 17th May 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 47% chance of some rain and a moderate breeze of 22 kph from the south.

29
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
47
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
22
kph wind from S

Galena weather for Monday 18th May 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a moderate breeze of 24 kph from the south.

28
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
4
UV index (Moderate)
80
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
24
kph wind from S

Galena weather for Tuesday 19th May 2026

Expect isolated thunderstorms in Galena, Illinois with a maximum temperature of 23°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 5-10 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 23 kph from the south-west.