Hamilton weather live forecast

Today's maximum temperature in Hamilton is expected to be 30°C. Select a day from the live weather forecast for Hamilton, Montana, USA for more weather parameters.

Thursday
27th Aug
30

14

6

6
Friday
28th Aug
27

11

8

6
Saturday
29th Aug
23

9

6

6
Sunday
30th Aug
19

6

13

6
Monday
31st Aug
25

4

11

6

5-day weather forecast updated at 04:03 on Thursday 27th August 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 Thursday 27th August 2026

Expect broken clouds in Hamilton, Montana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.

30
°C maximum temperature
14
°C minimum temperature
broken clouds
6
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from S

Hamilton weather for Friday 28th August 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

27
°C maximum temperature
11
°C minimum temperature
scattered clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
13
kph wind from W

Hamilton weather for Saturday 29th August 2026

Expect isolated thunderstorms in Hamilton, Montana with a maximum temperature of 23°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 55% chance of some rain and a light breeze of 12 kph from the west.

23
°C maximum temperature
9
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
55
% chance of some rain
<5
mm of rainfall expected
23
°C wind chill
12
kph wind from W

Hamilton weather for Sunday 30th August 2026

Expect clear skies in Hamilton, Montana with a maximum temperature of 19°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

19
°C maximum temperature
6
°C minimum temperature
clear skies
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
19
°C wind chill
13
kph wind from W

Hamilton weather for Monday 31st August 2026

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 25°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.