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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Three Rivers, OR
Content continues below
May
Average Temperature
High
17°
Feels 17
Low
1°
Feels -1
Average Precipitation
3 Days
Rain amount
6.6mm
Snow amount
0.5cm
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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
25°
23
25°
24
26°
25
22°
26
10°
27
12°
28
16°
29
19°
30
18°
31
18°
Forecast
Friday, May 22, 2026
Day
25°
Feels 25
Wind
18 km/h SW
Gust
27 km/h
Humidity
21%
P.O.P
10%
Night
4°
Feels 2
Wind
18 km/h N
Gust
27 km/h
Humidity
87%
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.