Annual mean 17°C · wettest around March · prevailing wind SW
Warmest
31.4 °C
Coldest
7.3 °C
Wettest
75%
Windiest
5.1 m/s
Prevailing
SW
3.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Helena-West Helena over the whole year is 17°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 3°C. Helena-West Helena has no sharply defined rainy season: the chance of rain on a given day runs from 63% in September, the driest month, to 71% in March, the wettest. Winds in Helena-West Helena are highest in February, averaging 3.8 m/s (14 km/h), and lightest in August, at 1.9 m/s (7 km/h). The prevailing wind is from the SW. The clearest skies in Helena-West Helena come in June, when the sky is typically 28% covered; February is the cloudiest month, at 54%.
Month by month Helena-West Helena climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
8°C
3°C
4°C
68%
52%
3.5 m/s
7
0
31
February
11°C
6°C
8°C
71%
54%
3.8 m/s
21
0
44
March
16°C
9°C
13°C
71%
44%
3.8 m/s
38
3
61
April
20°C
13°C
17°C
69%
39%
3.6 m/s
57
13
61
May
26°C
18°C
25°C
67%
36%
3.0 m/s
51
46
28
June
30°C
22°C
32°C
65%
28%
2.4 m/s
16
51
4
July
31°C
24°C
35°C
66%
29%
2.1 m/s
4
28
0
August
30°C
22°C
34°C
68%
29%
1.9 m/s
8
39
1
September
29°C
19°C
30°C
63%
32%
1.9 m/s
28
47
13
October
23°C
13°C
22°C
70%
32%
2.5 m/s
55
32
44
November
15°C
7°C
12°C
68%
43%
2.8 m/s
35
4
61
December
11°C
6°C
7°C
67%
52%
3.2 m/s
14
0
43
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Helena-West Helena weather by season
Year round, Helena-West Helena has days of about 8°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from 3°C to 24°C through the year, and the average temperature over the year is 17°C around the clock. Rain is most likely around March and least likely around September. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Helena-West Helena weather in winterDecember to February
High 10°CLow 5°CRain 68%
Winter in Helena-West Helena has typical daily highs of about 10°C and lows of about 5°C, with a 68% chance of rain on a given day.
Helena-West Helena weather in springMarch to May
High 21°CLow 13°CRain 69%
Spring in Helena-West Helena has typical daily highs of about 21°C and lows of about 13°C, with a 69% chance of rain on a given day.
Helena-West Helena weather in summerJune to August
High 30°CLow 23°CRain 66%
Summer in Helena-West Helena has typical daily highs of about 30°C and lows of about 23°C, with a 66% chance of rain on a given day.
Helena-West Helena weather in autumnSeptember to November
High 22°CLow 13°CRain 67%
Autumn in Helena-West Helena has typical daily highs of about 22°C and lows of about 13°C, with a 67% chance of rain on a given day.
When is the rainy season in Helena-West Helena?
Helena-West Helena has no sharply defined rainy season: the chance of rain on a given day runs from 63% in September, the driest month, to 71% in March, the wettest.
What time of year is Helena-West Helena windiest?
Winds in Helena-West Helena are highest in February, averaging 3.8 m/s (14 km/h), and lightest in August, at 1.9 m/s (7 km/h). The prevailing wind is from the SW.
What is the average temperature in Helena-West Helena year round?
The average temperature in Helena-West Helena over the whole year is 17°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 3°C.