Weather & Climate in Grenora, ND

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Grenora has a cool climate with an average annual temperature of 38°F (4°C). Winters average 7°F in January while summers reach 67°F in July. The area gets 274 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 15.3 inches (drier than the 38-inch national average). The area receives 36.5 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 2,133 feet.

Temperature

7°F Jan (-14°C) 67°F Jul (19°C)

Annual Average	38.4°F
	29% below US avg
January Average	7°F (-14°C)
July Average	67°F (19°C)
Sunny Days	274 days/yr

Geography

Elevation	2,133 ft (650 m)
Area	0.6 sq mi (1.5 km²)
Population Density	530/sq mi
Coordinates	48.6199°N, 103.9367°W
Timezone	America/Chicago
County	Divide County County
Nearest Airport	Williston Basin International (XWA) 26 miles away

Precipitation & Snow

Annual Rainfall 15.3"

60% below US avg

Snowfall 36.5"

Wettest Month (Jun) 2.52"

Driest Month (Feb) 0.35"

Air Quality

AQI Median	38.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	5.8 / 100
Social Vulnerability	63.7 / 100
Community Resilience	17.0 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Very Low
Flood	Very Low
Hail	Relatively Low
Strong Wind	Very Low
Heat Wave	Very Low
Winter Weather	Relatively Moderate
Lightning	Very Low
Ice Storm	Relatively Moderate
Drought	Relatively Low
Cold Wave	Relatively Low
Landslide	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.

Feb 25, 2014	23 km N of Brockton, Montana	M3.8	75 km	5 km
Jul 29, 1998	16 km WNW of Froid, Montana	M3.8	63 km	5 km
Nov 11, 1998	10 km SW of Grenora, North Dakota	M3.5	11 km	5 km
Sep 28, 2012	22 km ESE of Williston, North Dakota	M3.3	77 km	5 km
May 6, 2014	12 km NNW of Knife River, Montana	M2.6	125 km	8 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

76 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 2 fatalities, 1 injury.

Date	Rating	Distance	Path	Fatalities
Jul 26, 2010	EF3	78 km	18.0 mi	2
Jul 11, 1974	EF3	86 km	0.1 mi	0
Jun 14, 1950	EF3	36 km	23.7 mi	0
Jun 27, 1982	EF2	53 km	0.4 mi	0
Jun 5, 1976	EF2	75 km	2.0 mi	0
Jun 25, 1975	EF2	77 km	0.1 mi	0
Jul 2, 1971	EF2	43 km	10.0 mi	0
Sep 21, 1969	EF2	61 km	1.0 mi	0
Jun 13, 1953	EF2	65 km	0.1 mi	0
Jul 1, 1952	EF2	93 km	9.7 mi	0
Jul 9, 2018	EF1	47 km	2.1 mi	0
Jun 11, 2007	EF1	26 km	3.0 mi	0
Jul 18, 2003	EF1	58 km	2.0 mi	0
Jul 21, 1999	EF1	58 km	1.0 mi	0
Jul 4, 1998	EF1	95 km	2.0 mi	0
Jun 29, 1991	EF1	92 km	0.2 mi	0
Jul 2, 1990	EF1	43 km	0.1 mi	0
Jul 13, 1980	EF1	68 km	0.1 mi	0
May 17, 1977	EF1	88 km	8.5 mi	0
Jun 27, 1975	EF1	44 km	0.1 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

19 wildfires (100+ acres) recorded within 100 km. Largest: WILLIAMS CO WILDLAND FIRE (67,150 acres, 2024).

Year	Name	Acres Burned	Distance
2024	WILLIAMS CO WILDLAND FIRE	67,150	55 km
1988	BAINVILLE	12,790	62 km
2016	FLAGSTAFF HILL	9,129	64 km
2017	YOOPER	7,834	82 km
1999	OUTLOOK	6,292	69 km
2021	SMITH	5,212	91 km
1999	ANTELOPE	5,118	36 km
2015	RIDGE ROAD	3,390	87 km
2021	13 MILE FIRE	2,585	39 km
2007	W-RX-F SANDHILLS SUB UNIT B	2,381	37 km
2018	MTMLR-FY18-RX-WUI DEEP LAKE	2,088	35 km
2021	HIGHWAY 16 NORTH	2,069	62 km
2022	MTMLR-FY22-RX-BRIDGERMAN	1,852	34 km
2023	ROUTE 1	1,403	81 km
2008	NORTH SOUTH LAKE CREEK SU A	1,367	28 km
2011	W-RX-F EAST ML BRIGERMANN	1,197	36 km
2023	MTMLR-HFR-FY23-RX	1,128	54 km
2007	H-RX-F BRIGERMANN 2007	1,043	35 km
2022	MTMLR-FY22-RX-NORTHSHORE	1,015	37 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	7°F (-14°C)	0.4 in	Coldest
February	16°F (-9°C)	0.4 in	Driest
March	28°F (-2°C)	0.6 in
April	43°F (6°C)	1.2 in
May	56°F (13°C)	2.2 in
June	65°F (18°C)	2.5 in	Wettest
July	67°F (19°C)	2.2 in
August	68°F (20°C)	1.6 in	Warmest
September	57°F (14°C)	1.5 in
October	44°F (7°C)	0.8 in
November	26°F (-3°C)	0.4 in
December	13°F (-11°C)	0.5 in

Grenora has a seasonal temperature swing of 61°F / from 7°F in January to 68°F in August. Total annual precipitation is 14.2 inches, with June being the wettest month (2.5") and February the driest (0.4").

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