Grand Junction weather by month & the best time to visit

When is the best time to visit Grand Junction?

For sunshine, the best time to visit Grand Junction is May, then October and September. The dullest month is January (0/100, 29 mm of rain). The full month-by-month picture is in the table below.

How sunny is Grand Junction?

Grand Junction is one of the sunniest places on Earth: about 3,302 hours of sunshine a year. 93 Sunshine Score points separate May (93) from January (0), so the month you pick matters. It ranks #51 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 377 mm of rain spreads fairly evenly across the months, with no pronounced dry season.

Sunshine Score by month

Month	Score	Day high	Night low	Rain	UV
January	0	5° / 41°F	-5° / 23°F	29 mm	2
February	0	7° / 45°F	-3° / 27°F	29 mm	3
March	39	13° / 55°F	0° / 32°F	32 mm	5
April	85	19° / 66°F	3° / 37°F	33 mm	7
May	93	25° / 77°F	9° / 48°F	31 mm	8
June	86	33° / 91°F	15° / 59°F	15 mm	10
July	56	36° / 97°F	19° / 66°F	33 mm	10
August	83	33° / 91°F	18° / 64°F	34 mm	9
September	91	28° / 82°F	13° / 55°F	40 mm	7
October	92	20° / 68°F	5° / 41°F	38 mm	5
November	31	12° / 54°F	0° / 32°F	28 mm	3
December	0	5° / 41°F	-5° / 23°F	35 mm	2

See Grand Junction on the map →