Weather in Mesa County

Calculated from weather data of Grand Junction Regional Airport (KGJT) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	39.0	45.0	39.0	37.0	39.0	34.0
February	46.0	53.0	41.0	43.0	46.0	45.0
March	57.0	58.0	48.0	56.0	57.0	58.0
April	68.0		65.0	68.0	70.0	68.0
May	78.0		79.0	79.0	79.0	82.0
June	90.0		86.0	91.0	93.0	90.0
July	96.0		98.0	96.0	96.0	96.0
August	93.0		93.0	92.0	91.0	96.0
September	84.0		84.0	86.0	84.0	83.0
October	66.0		69.0	66.0	64.0	70.0
November	53.0		54.0	48.0	55.0	55.0
December	41.0		45.0	39.0	42.0	39.0
Average	66.0	52.0	67.0	68.0	68.0	68.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	22.0	26	27	18	19	20
February	26.0	31	23	22	25	21
March	34.0	36	30	33	33	37
April	40.0		37	39	39	39
May	50.0		53	47	51	52
June	60.0		59	60	63	59
July	67.0		69	69	69	66
August	65.0		66	66	63	66
September	55.0		56	58	56	53
October	40.0		44	43	41	40
November	30.0		31	28	32	31
December	22.0		25	24	25	17
Average	41.0	31.0	43.0	43.0	43.0	42.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
86 °F or warmer	0	80	99	96	102
77 °F or warmer	0	148	141	145	151
68 °F or warmer	0	183	188	173	191
32 °F or colder	45	121	116	107	118

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	6.4	8	11	5	3	6
February	5.8	4	13	4	6	2
March	6.0	10	10	3	1	9
April	2.7		6	2	3	3
May	3.1		3	2	2	1
June	1.3		1	2	1	1
July	1.0		0	2	1	1
August	0.9		1	2	2	0
September	2.4		1	5	3	5
October	4.0		2	6	6	2
November	1.9		3	4	1	2
December	6.4		9	15	13	4
Average	3.8	7.5	4.7	3.7	3.2	2.7

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	5.2	5	5	5	6	4
February	7.0	8	8	6	6	7
March	8.8	9	9	8	10	8
April	9.7		9	11	9	9
May	9.7		9	11	10	11
June	10.0		10	10	9	11
July	8.7		8	8	8	10
August	8.5		8	8	9	9
September	8.5		8	8	7	7
October	7.1		7	6	7	7
November	6.0		5	7	5	8
December	5.1		4	6	6	6
Average	7.9	7.2	7.6	8.0	7.9	8.2

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	N	NE	NE	NE	NW
February	NW	SW	NW	NW	NW
March	SW	SE	N	S	S
April		SW	W	SW	W
May		SE	W	SW	SW
June		S	S	S	SW
July		SW	SE	S	S
August		S	S	SE	S
September		S	S	SW	S
October		SE	SE	S	SW
November		NE	S	W	S
December		SE	NW	SW	E

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Mesa County weather Q&A

What is the warmest month in Mesa County?

The warmest month is July with an average temperature of 96 °F over the past years.

What is the coldest month in Mesa County?

The coldest month is January with an average daytime temperature of 39 °F in the past few years.

Which month is the wettest in Mesa County?

Chance of precipitation is the highest in December with a probability of around 6.5 %.

Which month is the driest in Mesa County?

The least rainfall and snow can be expected in August. The probability is about 1.0 %.