Hamilton weather live forecast

Today's maximum temperature in Hamilton is expected to be 28°C. Select a day from the live weather forecast for Hamilton, Montana, USA for more weather parameters.

Monday
20th Jul
28

15

3

8
Tuesday
21st Jul
31

16

7

10
Wednesday
22nd Jul
31

17

8

9
Thursday
23rd Jul
33

18

11

9
Friday
24th Jul
34

17

9

9

5-day weather forecast updated at 04:03 on Monday 20th July 2026 GMT

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

Hamilton weather forecast by day

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

Hamilton weather for Monday 20th July 2026

Expect broken clouds in Hamilton, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north.

28
°C maximum temperature
15
°C minimum temperature
broken clouds
3
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
13
kph wind from N

Hamilton weather for Tuesday 21st July 2026

Expect broken clouds in Hamilton, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

31
°C maximum temperature
16
°C minimum temperature
broken clouds
7
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from N

Hamilton weather for Wednesday 22nd July 2026

Expect broken clouds in Hamilton, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

31
°C maximum temperature
17
°C minimum temperature
broken clouds
8
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from N

Hamilton weather for Thursday 23rd July 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 33°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south.

33
°C maximum temperature
18
°C minimum temperature
scattered clouds
11
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from S

Hamilton weather for Friday 24th July 2026

Expect isolated thunderstorms in Hamilton, Montana with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a gentle breeze of 18 kph from the west.