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July is the hottest month in Helena with an average temperature of 22°C (71°F) and the coldest is January at -5°C (23°F). The wettest month is May with an average of 50mm of rain..
Average Temperature Helena
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
Average High Low Temperature Helena
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
Average Rainfall Helena
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
More Annual Averages
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Helena : Next 24-Hour Weather
Today - 6th May 2026
Sunrise 06:06
Sunset 20:44
8:00
3°C
(37°F)
9:00
6°C
(42°F)
10:00
9°C
(47°F)
11:00
11°C
(52°F)
12:00
14°C
(56°F)
13:00
16°C
(61°F)
14:00
18°C
(64°F)
15:00
19°C
(66°F)
16:00
20°C
(67°F)
17:00
19°C
(66°F)
18:00
19°C
(65°F)
19:00
17°C
(62°F)
20:00
13°C
(55°F)
21:00
12°C
(52°F)
22:00
11°C
(51°F)
23:00
11°C
(51°F)
Tomorrow - 7th May 2026
Sunrise 06:06
Sunset 20:44
0:00
10°C
(50°F)
1:00
10°C
(49°F)
2:00
10°C
(50°F)
3:00
10°C
(49°F)
4:00
10°C
(49°F)
5:00
9°C
(48°F)
6:00
10°C
(48°F)
7:00
12°C
(52°F)
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Helena
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