Grand Junction weather by month

Check out Grand Junction weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Grand Junction (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
36°F maximum daytime temperature in January in Grand Junction36
46°F maximum daytime temperature in February in Grand Junction46
55°F maximum daytime temperature in March in Grand Junction55
66°F maximum daytime temperature in April in Grand Junction66
75°F maximum daytime temperature in May in Grand Junction75
88°F maximum daytime temperature in June in Grand Junction88
93°F maximum daytime temperature in July in Grand Junction93
90°F maximum daytime temperature in August in Grand Junction90
81°F maximum daytime temperature in September in Grand Junction81
68°F maximum daytime temperature in October in Grand Junction68
52°F maximum daytime temperature in November in Grand Junction52
39°F maximum daytime temperature in December in Grand Junction39
Min temperature (night-time)
14°F minimum night-time temperature in January in Grand Junction14
21°F minimum night-time temperature in February in Grand Junction21
30°F minimum night-time temperature in March in Grand Junction30
37°F minimum night-time temperature in April in Grand Junction37
46°F minimum night-time temperature in May in Grand Junction46
54°F minimum night-time temperature in June in Grand Junction54
61°F minimum night-time temperature in July in Grand Junction61
59°F minimum night-time temperature in August in Grand Junction59
50°F minimum night-time temperature in September in Grand Junction50
39°F minimum night-time temperature in October in Grand Junction39
27°F minimum night-time temperature in November in Grand Junction27
18°F minimum night-time temperature in December in Grand Junction18
Heat & Humidity
No heat & humidity in January in Grand Junction0
No heat & humidity in February in Grand Junction0
No heat & humidity in March in Grand Junction0
No heat & humidity in April in Grand Junction0
No heat & humidity in May in Grand Junction0
Moderate heat & humidity in June in Grand JunctionM
High heat & humidity in July in Grand JunctionH
Moderate heat & humidity in August in Grand JunctionM
Low heat & humidity in September in Grand JunctionL
No heat & humidity in October in Grand Junction0
No heat & humidity in November in Grand Junction0
No heat & humidity in December in Grand Junction0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Grand Junction

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Grand Junction10
11 hours of daylight per day in February in Grand Junction11
12 hours of daylight per day in March in Grand Junction12
13 hours of daylight per day in April in Grand Junction13
14 hours of daylight per day in May in Grand Junction14
15 hours of daylight per day in June in Grand Junction15
15 hours of daylight per day in July in Grand Junction15
14 hours of daylight per day in August in Grand Junction14
12 hours of daylight per day in September in Grand Junction12
11 hours of daylight per day in October in Grand Junction11
10 hours of daylight per day in November in Grand Junction10
9 hours of daylight per day in December in Grand Junction9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Grand Junction2
UV (maximum) index 3 (Moderate) in February in Grand Junction3
UV (maximum) index 5 (Moderate) in March in Grand Junction5
UV (maximum) index 7 (High) in April in Grand Junction7
UV (maximum) index 9 (Very High) in May in Grand Junction9
UV (maximum) index 10 (Very High) in June in Grand Junction10
UV (maximum) index 11 (Extreme) in July in Grand Junction11
UV (maximum) index 10 (Very High) in August in Grand Junction10
UV (maximum) index 7 (High) in September in Grand Junction7
UV (maximum) index 5 (Moderate) in October in Grand Junction5
UV (maximum) index 3 (Moderate) in November in Grand Junction3
UV (maximum) index 2 (Low) in December in Grand Junction2

Rainfall in Grand Junction

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
6 days with some rainfall in January in Grand Junction6
5 days with some rainfall in February in Grand Junction5
8 days with some rainfall in March in Grand Junction8
7 days with some rainfall in April in Grand Junction7
6 days with some rainfall in May in Grand Junction6
4 days with some rainfall in June in Grand Junction4
6 days with some rainfall in July in Grand Junction6
6 days with some rainfall in August in Grand Junction6
6 days with some rainfall in September in Grand Junction6
5 days with some rainfall in October in Grand Junction5
6 days with some rainfall in November in Grand Junction6
6 days with some rainfall in December in Grand Junction6
Average monthly rainfall (inches)
0.6 inches monthly rainfall in January in Grand Junction0.6
0.5 inches monthly rainfall in February in Grand Junction0.5
0.9 inches monthly rainfall in March in Grand Junction0.9
0.7 inches monthly rainfall in April in Grand Junction0.7
0.9 inches monthly rainfall in May in Grand Junction0.9
0.5 inches monthly rainfall in June in Grand Junction0.5
0.7 inches monthly rainfall in July in Grand Junction0.7
0.9 inches monthly rainfall in August in Grand Junction0.9
0.8 inches monthly rainfall in September in Grand Junction0.8
1.0 inches monthly rainfall in October in Grand Junction1.0
0.7 inches monthly rainfall in November in Grand Junction0.7
0.6 inches monthly rainfall in December in Grand Junction0.6

More about Grand Junction

Grand Junction by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Colorado (Grand Junction) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Grand Junction?

Grand Junction has a cool desert climate with hot summers.

Metric (°C)  |  Imperial (°F)

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More about the USA

Compare Grand Junction with the USA

Below the Grand Junction chart shows average maximum daytime temperature for Grand Junction, Colorado, USA and the USA (Washington).

Maximum daytime temperature (°F)

Grand Junction, Colorado, USA
USA (Washington)
36
41
46
45
55
55
66
66
75
75
88
84
93
88
90
86
81
79
68
68
52
57
39
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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