- Send money overseas with XE Money Transfers
- Quick & easy to make international transfers
- Choose from over 130 currencies for over 220 countries
Helena weather by month
Check out Helena weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Helena (°C)
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max temperature (daytime) | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Min temperature (night-time) | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Heat & Humidity | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Helena
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Daily hours of sunshine | ||||||||||||
Daily hours of daylight | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
UV Index (Maximum) | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Rainfall in Helena
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of days with some rain | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Average monthly rainfall (mm) | ![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
More about Helena
Helena by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Montana
The climate guide for Montana (Helena) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Helena?
Helena has a cold semi arid climate with warm summers.
Helena weather in January
Expect daytime maximum temperatures of -1°C in Helena, Montana in January based on long-term weather averages. There are 4 hours of sunshine per day on average, which might fall as snow.
- -1°C max day temperature
-1
- 4 hours of sunshine per day
- 9 days with some rainfall
9
- -13°C min night temperature
-13
- 9 hours of daylight per day
9
- No heat & humidity
0
- 17 mm of monthly rainfall
17
- 1 (Low) UV index
1
Helena weather in February
Expect daytime maximum temperatures of 3°C in Helena, Montana in February based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.
- 3°C max day temperature
3
- 5 hours of sunshine per day
- 7 days with some rainfall
7
- -10°C min night temperature
-10
- 10 hours of daylight per day
10
- No heat & humidity
0
- 12 mm of monthly rainfall
12
- 2 (Low) UV index
2
Helena weather in March
Expect daytime maximum temperatures of 6°C in Helena, Montana in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall, which might fall as snow.
- 6°C max day temperature
6
- 7 hours of sunshine per day
- 10 days with some rainfall
10
- -6°C min night temperature
-6
- 12 hours of daylight per day
12
- No heat & humidity
0
- 21 mm of monthly rainfall
21
- 3 (Moderate) UV index
3
Helena weather in April
Expect daytime maximum temperatures of 12°C in Helena, Montana in April based on long-term weather averages. There are 8 hours of sunshine per day on average.
- 12°C max day temperature
12
- 8 hours of sunshine per day
- 9 days with some rainfall
9
- -2°C min night temperature
-2
- 14 hours of daylight per day
14
- No heat & humidity
0
- 28 mm of monthly rainfall
28
- 5 (Moderate) UV index
5
Helena weather in May
Expect daytime maximum temperatures of 18°C in Helena, Montana in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 51 mm of rainfall in the month.
- 18°C max day temperature
18
- 9 hours of sunshine per day
- 11 days with some rainfall
11
- 3°C min night temperature
3
- 15 hours of daylight per day
15
- No heat & humidity
0
- 51 mm of monthly rainfall
51
- 7 (High) UV index
7
Helena weather in June
Expect daytime maximum temperatures of 23°C in Helena, Montana in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 10 days with some rainfall and typically 55 mm of rainfall in the month.
- 23°C max day temperature
23
- 10 hours of sunshine per day
- 10 days with some rainfall
10
- 8°C min night temperature
8
- 16 hours of daylight per day
16
- No heat & humidity
0
- 55 mm of monthly rainfall
55
- 8 (Very High) UV index
8
Helena weather in July
Expect daytime maximum temperatures of 28°C in Helena, Montana in July based on long-term weather averages. There are 12 hours of sunshine per day on average.
- 28°C max day temperature
28
- 12 hours of sunshine per day
- 7 days with some rainfall
7
- 10°C min night temperature
10
- 15 hours of daylight per day
15
- Low heat & humidity
L
- 33 mm of monthly rainfall
33
- 9 (Very High) UV index
9
Helena weather in August
Expect daytime maximum temperatures of 28°C in Helena, Montana in August based on long-term weather averages. There are 10 hours of sunshine per day on average.
- 28°C max day temperature
28
- 10 hours of sunshine per day
- 8 days with some rainfall
8
- 9°C min night temperature
9
- 14 hours of daylight per day
14
- Low heat & humidity
L
- 34 mm of monthly rainfall
34
- 8 (Very High) UV index
8
Helena weather in September
Expect daytime maximum temperatures of 20°C in Helena, Montana in September based on long-term weather averages. There are 8 hours of sunshine per day on average.
- 20°C max day temperature
20
- 8 hours of sunshine per day
- 7 days with some rainfall
7
- 4°C min night temperature
4
- 13 hours of daylight per day
13
- No heat & humidity
0
- 30 mm of monthly rainfall
30
- 5 (Moderate) UV index
5
Helena weather in October
Expect daytime maximum temperatures of 14°C in Helena, Montana in October based on long-term weather averages. There are 7 hours of sunshine per day on average.
- 14°C max day temperature
14
- 7 hours of sunshine per day
- 6 days with some rainfall
6
- -1°C min night temperature
-1
- 11 hours of daylight per day
11
- No heat & humidity
0
- 19 mm of monthly rainfall
19
- 3 (Moderate) UV index
3
Helena weather in November
Expect daytime maximum temperatures of 5°C in Helena, Montana in November based on long-term weather averages. There are 4 hours of sunshine per day on average, which might fall as snow.
- 5°C max day temperature
5
- 4 hours of sunshine per day
- 8 days with some rainfall
8
- -7°C min night temperature
-7
- 9 hours of daylight per day
9
- No heat & humidity
0
- 16 mm of monthly rainfall
16
- 1 (Low) UV index
1
Helena weather in December
Expect daytime maximum temperatures of 0°C in Helena, Montana in December based on long-term weather averages. There are 3 hours of sunshine per day on average, which might fall as snow.
- 0°C max day temperature
0
- 3 hours of sunshine per day
- 9 days with some rainfall
9
- -12°C min night temperature
-12
- 9 hours of daylight per day
9
- No heat & humidity
0
- 16 mm of monthly rainfall
16
- 1 (Low) UV index
1
More about Helena
Helena by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Montana
- Save up to £800 on tours with Travelsphere
- Book breaks to Italy, Japan, the USA & more
- Travel before 31st December 2027 (inclusive)
Expires at 23:59 on Monday 31st Mar 2025 · View all Travelsphere offers
The climate guide for Montana (Helena) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
Compare Helena with the UK
Below the Helena chart shows average maximum daytime temperature for Helena, Montana, USA and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
Compare more Helena weather >>
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holidays in the sun for less
- Beach holidays
- Family holidays
- City breaks
- Summer holidays
- Winter sun holidays
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- Airport parking deals
- TUI
- Jet2holidays
- easyJet holidays
- Love Holidays
- January sales
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport