Hamilton weather live forecast

Today's maximum temperature in Hamilton is expected to be 12°C. Select a day from the live weather forecast for Hamilton, Montana, USA for more weather parameters.

Monday
15th Dec
12

4

2

1
Tuesday
16th Dec
11

8

4

1
Wednesday
17th Dec
9

2

6

1
Thursday
18th Dec
6

0

0

1
Friday
19th Dec
9

4

0

1

5-day weather forecast updated at 04:04 on Monday 15th December 2025 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 15th December 2025

Expect mostly cloudy with light rain in Hamilton, Montana with a maximum temperature of 12°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 19 kph from the south.

12
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
1
UV index (Low)
79
% chance of some rain
<5
mm of rainfall expected
12
°C wind chill
19
kph wind from S

Hamilton weather for Tuesday 16th December 2025

Expect sunshine and showers in Hamilton, Montana with a maximum temperature of 11°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 38% chance of some rain and a gentle breeze of 18 kph from the south-west.

11
°C maximum temperature
8
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
38
% chance of some rain
<5
mm of rainfall expected
11
°C wind chill
18
kph wind from SW

Hamilton weather for Wednesday 17th December 2025

Expect sunshine and showers in Hamilton, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 20-30 mm of rainfall expected with 91% chance of some rain and a fresh breeze of 31 kph from the west.

9
°C maximum temperature
2
°C minimum temperature
sunshine and showers
6
hours of sunshine
1
UV index (Low)
91
% chance of some rain
<30
mm of rainfall expected
5
°C wind chill
31
kph wind from W

Hamilton weather for Thursday 18th December 2025

Expect cloudy with some rain in Hamilton, Montana with a maximum temperature of 6°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a gentle breeze of 18 kph from the south.

6
°C maximum temperature
0
°C minimum temperature
cloudy with some rain
0
hours of sunshine
1
UV index (Low)
86
% chance of some rain
<10
mm of rainfall expected
2
°C wind chill
18
kph wind from S

Hamilton weather for Friday 19th December 2025

Expect cloudy with some rain in Hamilton, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 89% chance of some rain and a gentle breeze of 19 kph from the south.