Annual mean 7°C · wettest around August · prevailing wind SE
Warmest
28.6 °C
Coldest
-2.7 °C
Wettest
72%
Windiest
4.7 m/s
Prevailing
SE
3.8 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 Hailey over the whole year is 7°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -8°C. The rainy (wet) season in Hailey runs from August, peaking in August with a 65% chance of rain on a given day. The dry season is May to July; July is the driest month, at 25%. Winds in Hailey are highest in May, averaging 3.6 m/s (13 km/h), and lightest in January, at 2.6 m/s (9 km/h). The prevailing wind is from the SE. The clearest skies in Hailey come in July, when the sky is typically 13% covered; January is the cloudiest month, at 48%.
Month by month Hailey 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
-3°C
-8°C
-7°C
46%
48%
2.6 m/s
0
0
0
February
-1°C
-6°C
-5°C
41%
46%
3.0 m/s
0
0
2
March
4°C
-3°C
-0°C
46%
46%
3.2 m/s
1
0
13
April
11°C
1°C
6°C
50%
37%
3.5 m/s
7
0
43
May
16°C
6°C
11°C
41%
41%
3.6 m/s
33
1
68
June
22°C
11°C
18°C
33%
26%
3.5 m/s
67
13
69
July
28°C
15°C
24°C
25%
13%
3.6 m/s
75
51
35
August
26°C
13°C
22°C
65%
15%
3.5 m/s
79
34
50
September
21°C
8°C
17°C
44%
22%
3.3 m/s
60
9
72
October
13°C
2°C
8°C
55%
28%
3.1 m/s
20
0
57
November
5°C
-3°C
0°C
50%
36%
2.9 m/s
1
0
18
December
-1°C
-6°C
-6°C
42%
45%
2.7 m/s
0
0
2
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 Hailey weather by season
Year round, Hailey has days of about -3°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -8°C to 15°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around August and least likely around July. 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.
Hailey weather in winterDecember to February
High -2°CLow -7°CRain 43%
Winter in Hailey has typical daily highs of about -2°C and lows of about -7°C, with a 43% chance of rain on a given day.
Hailey weather in springMarch to May
High 10°CLow 2°CRain 46%
Spring in Hailey has typical daily highs of about 10°C and lows of about 2°C, with a 46% chance of rain on a given day.
Hailey weather in summerJune to August
High 25°CLow 13°CRain 41%
Summer in Hailey has typical daily highs of about 25°C and lows of about 13°C, with a 41% chance of rain on a given day.
Hailey weather in autumnSeptember to November
High 13°CLow 3°CRain 50%
Autumn in Hailey has typical daily highs of about 13°C and lows of about 3°C, with a 50% chance of rain on a given day.
When is the rainy season in Hailey?
The rainy (wet) season in Hailey runs from August, peaking in August with a 65% chance of rain on a given day. The dry season is May to July; July is the driest month, at 25%.
What time of year is Hailey windiest?
Winds in Hailey are highest in May, averaging 3.6 m/s (13 km/h), and lightest in January, at 2.6 m/s (9 km/h). The prevailing wind is from the SE.
What is the average temperature in Hailey year round?
The average temperature in Hailey over the whole year is 7°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -8°C.