Hamilton weather live forecast

Today's maximum temperature in Hamilton is expected to be 19°C. Select a day from the live weather forecast for Hamilton, Montana, USA for more weather parameters.

Wednesday
18th Mar
19

6

9

6
Thursday
19th Mar
21

6

11

6
Friday
20th Mar
22

6

11

6
Saturday
21st Mar
12

2

2

4
Sunday
22nd Mar
13

-2

10

6

5-day weather forecast updated at 04:03 on Wednesday 18th March 2026 GMT

More about Hamilton

Hamilton by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

Crystal Ski: Top ski deals to USA

Sale

Save on skiing holidays to the USA in winter 2025/2026
Book early with Crystal Ski for the best deals
Filter by promotional offers, duration, board basis & more

Go to Crystal Ski deal >>

View all Crystal Ski offers

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 Wednesday 18th March 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 19°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.

19
°C maximum temperature
6
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
19
°C wind chill
15
kph wind from S

Hamilton weather for Thursday 19th March 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 21°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.

21
°C maximum temperature
6
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
16
kph wind from S

Hamilton weather for Friday 20th March 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 22°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

22
°C maximum temperature
6
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from S

Hamilton weather for Saturday 21st March 2026

Expect mostly cloudy with light rain in Hamilton, Montana with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a light breeze of 12 kph from the west.

12
°C maximum temperature
2
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
58
% chance of some rain
<5
mm of rainfall expected
12
°C wind chill
12
kph wind from W

Hamilton weather for Sunday 22nd March 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 13°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.