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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Fairfield, ID
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May
Average Temperature
High
18°
Feels 17
Low
4°
Feels 2
Average Precipitation
4 Days
Rain amount
8.4mm
Snow amount
0.1cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
21°
23
25°
24
26°
25
26°
26
16°
27
14°
28
16°
29
18°
30
20°
31
22°
Forecast
Friday, May 22, 2026
Day
21°
Feels 21
Wind
15 km/h NE
Gust
23 km/h
Humidity
21%
P.O.P
20%
Night
6°
Feels 4
Wind
15 km/h N
Gust
23 km/h
Humidity
57%
P.O.P
10%
Historical Averages
May 22
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.