Hamilton weather live forecast

Today's maximum temperature in Hamilton is expected to be 25°C. Select a day from the live weather forecast for Hamilton, Montana, USA for more weather parameters.

Thursday
10th Sep
25

10

11

6
Friday
11th Sep
20

9

6

5
Saturday
12th Sep
19

6

6

6
Sunday
13th Sep
12

5

4

4
Monday
14th Sep
14

5

3

6

5-day weather forecast updated at 04:03 on Thursday 10th September 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 Thursday 10th September 2026

Expect sunshine and showers in Hamilton, Montana with a maximum temperature of 25°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 20 kph from the south.

25
°C maximum temperature
10
°C minimum temperature
sunshine and showers
11
hours of sunshine
6
UV index (High)
25
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
20
kph wind from S

Hamilton weather for Friday 11th September 2026

Expect sunshine and showers in Hamilton, Montana with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and a light breeze of 8 kph from the north.

20
°C maximum temperature
9
°C minimum temperature
sunshine and showers
6
hours of sunshine
5
UV index (Moderate)
11
% chance of some rain
<2
mm of rainfall expected
20
°C wind chill
8
kph wind from N

Hamilton weather for Saturday 12th September 2026

Expect sunshine and showers in Hamilton, Montana with a maximum temperature of 19°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 15 kph from the north-east.

19
°C maximum temperature
6
°C minimum temperature
sunshine and showers
6
hours of sunshine
6
UV index (High)
46
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
15
kph wind from NE

Hamilton weather for Sunday 13th September 2026

Expect mostly cloudy with rain in Hamilton, Montana with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 88% chance of some rain and a gentle breeze of 14 kph from the south-west.

12
°C maximum temperature
5
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
4
UV index (Moderate)
88
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
14
kph wind from SW

Hamilton weather for Monday 14th September 2026

Expect broken clouds in Hamilton, Montana with a maximum temperature of 14°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.