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Grand Junction May Weather

Averages and records for weather in Grand Junction, Colorado in the month of May.

Typical Grand Junction May Weather 1991–2020
Average daily high	76.5 °F
Average daily low	47.4 °F
Average monthly precipitation	0.8 inches
Average monthly snow	0.1 inches
Daily chance of precipitation	20.8%
Daily chance of snow	0.32%

Grand Junction May Weather Records 1900–2024
Highest temperature	101 °F	May 29, 2000
Lowest temperature	24 °F	May 1, 2011
Highest daily low	69 °F	May 29, 1989
Lowest daily high	42 °F	May 11, 1946
Hottest average high temperature	82.4 °F	1934
Coldest average high temperature	65.7 °F	1917
Most daily precipitation	1.8 inches	May 24, 1906
Most monthly precipitation	2.7 inches	1906
Most daily snow	5.0 inches	May 8, 1979
Most monthly snow	5.0 inches	1979

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	70.8	42.4	88	24
May 2	71.3	42.8	88	26
May 3	71.7	43.2	91	29
May 4	72.1	43.6	93	34
May 5	72.5	43.9	90	32
May 6	72.9	44.3	87	30
May 7	73.3	44.6	90	27
May 8	73.6	44.9	90	33
May 9	73.9	45.2	92	26
May 10	74.1	45.4	91	30
May 11	74.5	45.7	90	31
May 12	74.8	46.1	92	29
May 13	75.2	46.3	94	30
May 14	75.6	46.7	93	29
May 15	76.0	47.1	90	32
May 16	76.5	47.5	92	34
May 17	77.0	47.9	91	34
May 18	77.5	48.3	92	36
May 19	77.9	48.7	91	34
May 20	78.3	49.0	94	34
May 21	78.7	49.2	92	29
May 22	79.1	49.5	94	34
May 23	79.6	49.9	95	35
May 24	80.1	50.3	94	37
May 25	80.5	50.6	93	36
May 26	80.9	51.0	94	34
May 27	81.3	51.3	93	36
May 28	81.6	51.6	96	35
May 29	81.9	51.8	101	34
May 30	82.1	52.0	99	34
May 31	82.5	52.2	100	37

Weather Station Details

Years	Station	Coordinates
1900–2024	Grand Junction Walker Field	location