Weather in Mountrail County

Calculated from weather data of Stanley Municipal Airport (K08D) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	21.0	20.0	23.0	19.0	28.0	21.0
February	22.0	34.0	25.0	28.0	14.0	32.0
March	35.0	31.0	23.0	38.0	48.0	41.0
April	49.0	56.0	45.0	40.0	55.0	50.0
May	67.0		72.0	64.0	64.0	65.0
June	77.0		79.0	76.0	81.0	77.0
July	82.0		80.0	81.0	85.0	80.0
August	80.0		80.0	82.0	80.0	83.0
September	70.0		73.0	74.0	77.0	70.0
October	52.0		51.0	55.0	59.0	50.0
November	36.0		41.0	30.0	42.0	42.0
December	26.0		36.0	14.0	18.0	33.0
Average	49.0	35.0	52.0	51.0	55.0	54.0

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	6.0	5	8	-2	13	6
February	4.0	18	6	0	-4	14
March	17.0	14	5	18	23	21
April	28.0	32	26	24	28	25
May	42.0		47	41	39	41
June	53.0		57	51	55	53
July	57.0		54	58	60	56
August	54.0		56	56	54	54
September	46.0		50	47	47	44
October	32.0		33	35	37	29
November	19.0		26	14	22	20
December	10.0		18	1	0	14
Average	29.0	17.0	32.0	30.0	31.0	32.0

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	15	20	28	13
77 °F or warmer	0	75	67	91	67
68 °F or warmer	3	132	117	135	122
32 °F or colder	97	168	166	165	169

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	10.1	12	13	9	11	7
February	9.6	6	7	5	11	4
March	8.7	14	16	6	4	5
April	6.5	7	7	17	5	7
May	2.7		5	8	1	2
June	1.7		0	1	3	2
July	0.8		1	1	0	2
August	1.2		1	1	3	1
September	2.6		1	0	1	0
October	5.3		10	2	3	7
November	12.2		1	23	10	7
December	12.8		6	22	17	9
Average	6.1	9.6	5.1	6.8	5.0	3.8

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	11.4	12	9	13	11	10
February	12.0	12	14	15	12	11
March	11.9	12	12	15	12	12
April	13.6	15	14	17	12	13
May	12.8		11	16	14	13
June	11.3		8	13	12	12
July	9.7		10	10	10	10
August	9.6		10	10	11	10
September	11.3		11	12	12	13
October	12.9		13	14	14	13
November	11.8		10	15	12	12
December	10.9		10	12	12	11
Average	11.7	13.0	11.0	13.5	12.0	11.6

90th highest wind speed of United States

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	W	W	W	W	W
February	W	W	NW	W	W
March	NW	N	W	W	W
April	W	N	N	NW	NW
May		E	W	W	SE
June		NE	W	NW	W
July		W	W	SE	SW
August		NW	W	W	SW
September		SW	NW	W	W
October		NW	NW	NW	W
November		W	W	W	W
December		W	NW	W	W

Prevailing wind direction

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

Mountrail County weather Q&A

What is the warmest month in Mountrail County?

The warmest month is July with an average temperature of 82 °F over the past years.

What is the coldest month in Mountrail County?

The coldest month is January with an average daytime temperature of 21 °F in the past few years.

Which month is the wettest in Mountrail County?

Chance of precipitation is the highest in December with a probability of around 12.8 %.

Which month is the driest in Mountrail County?

The least rainfall and snow can be expected in July. The probability is about 0.8 %.