Annual mean 7°C · wettest around May · prevailing wind NW
Warmest
29.0 °C
Coldest
-4.0 °C
Wettest
24%
Windiest
5.7 m/s
Prevailing
NW
4.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Valley Southeast over the whole year is 7°C. July is the hottest month, with highs of about 28°C; February is the coldest, with lows of about -8°C. Helena Valley Southeast has no sharply defined rainy season: the chance of rain on a given day runs from 9% in January, the driest month, to 22% in May, the wettest. Winds in Helena Valley Southeast are highest in April, averaging 4.0 m/s (14 km/h), and lightest in August, at 3.1 m/s (11 km/h). The prevailing wind is from the NW. The clearest skies in Helena Valley Southeast come in July, when the sky is typically 13% covered; February is the cloudiest month, at 48%.
Month by month Helena Valley Southeast 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
-2°C
-7°C
-8°C
9%
43%
3.2 m/s
0
0
0
February
-3°C
-8°C
-9°C
13%
48%
3.8 m/s
0
0
4
March
5°C
-3°C
-1°C
12%
42%
3.5 m/s
1
0
15
April
11°C
2°C
4°C
17%
40%
4.0 m/s
8
0
40
May
16°C
8°C
11°C
22%
40%
3.7 m/s
36
2
67
June
22°C
13°C
18°C
20%
28%
3.7 m/s
63
14
68
July
28°C
16°C
24°C
15%
13%
3.2 m/s
66
52
37
August
26°C
15°C
23°C
15%
16%
3.1 m/s
73
43
46
September
20°C
10°C
16°C
20%
26%
3.1 m/s
59
13
69
October
12°C
3°C
7°C
16%
35%
3.4 m/s
19
0
51
November
4°C
-2°C
-1°C
10%
37%
3.5 m/s
1
0
15
December
-1°C
-5°C
-6°C
10%
44%
3.4 m/s
0
0
3
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 Valley Southeast weather by season
Year round, Helena Valley Southeast has days of about -3°C at their warmest in February, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -8°C to 16°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around May and least likely around January. 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 Valley Southeast weather in winterDecember to February
High -2°CLow -6°CRain 11%
Winter in Helena Valley Southeast has typical daily highs of about -2°C and lows of about -6°C, with a 11% chance of rain on a given day.
Helena Valley Southeast weather in springMarch to May
High 11°CLow 2°CRain 17%
Spring in Helena Valley Southeast has typical daily highs of about 11°C and lows of about 2°C, with a 17% chance of rain on a given day.
Helena Valley Southeast weather in summerJune to August
High 25°CLow 15°CRain 17%
Summer in Helena Valley Southeast has typical daily highs of about 25°C and lows of about 15°C, with a 17% chance of rain on a given day.
Helena Valley Southeast weather in autumnSeptember to November
High 12°CLow 4°CRain 15%
Autumn in Helena Valley Southeast has typical daily highs of about 12°C and lows of about 4°C, with a 15% chance of rain on a given day.
When is the rainy season in Helena Valley Southeast?
Helena Valley Southeast has no sharply defined rainy season: the chance of rain on a given day runs from 9% in January, the driest month, to 22% in May, the wettest.
What time of year is Helena Valley Southeast windiest?
Winds in Helena Valley Southeast are highest in April, averaging 4.0 m/s (14 km/h), and lightest in August, at 3.1 m/s (11 km/h). The prevailing wind is from the NW.
What is the average temperature in Helena Valley Southeast year round?
The average temperature in Helena Valley Southeast over the whole year is 7°C. July is the hottest month, with highs of about 28°C; February is the coldest, with lows of about -8°C.