Monthly Historical AveragesJefferson, CO
Average Temperature
High
13°
Feels 12
Low
-2°
Feels -5
Average Precipitation
5 Days
6.5mm
7.2cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 17, 2026
Day
12°Feels 9
Wind
39 km/h SW
Gust
59 km/h
Humidity
27%
P.O.P
90%
Rain
1-3 mm
Night
1°Feels -2
Wind
35 km/h E
Gust
53 km/h
Humidity
96%
P.O.P
90%
Snow
<1 cm
Rain
1-3 mm
Historical AveragesMay 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity