Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Trenton has a cool climate with an average annual temperature of 43°F (6°C). Winters average 14°F in January while summers reach 71°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 14.8 inches (drier than the 38-inch national average). The area receives 39.3 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 1,937 feet.
Temperature
14°F Jan (-10°C)71°F Jul (22°C)
Annual Average
43.4°F
20% below US avg
January Average
14°F (-10°C)
July Average
71°F (22°C)
Sunny Days
274 days/yr
Geography
Elevation
1,937 ft (590 m)
Area
1.1 sq mi (2.7 km²)
Population Density
442/sq mi
Coordinates
48.0699°N, 103.8432°W
Timezone
America/Chicago
County
Williams County County
Nearest Airport
Williston Basin International (XWA) 14 miles away
Precipitation & Snow
Annual Rainfall14.8"
61% below US avg
Snowfall39.3"
Wettest Month (Jun)2.64"
Driest Month (Feb)0.35"
Air Quality
AQI Median
38.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
53.7 / 100
Social Vulnerability
10.6 / 100
Community Resilience
52.6 / 100
Hazard Breakdown
Tornado
Relatively Low
Earthquake
Very Low
Wildfire
Relatively Low
Flood
Relatively Low
Hail
Relatively Low
Strong Wind
Relatively Low
Heat Wave
Very Low
Winter Weather
Very High
Lightning
Relatively Low
Ice Storm
Relatively High
Drought
Relatively Low
Cold Wave
Relatively High
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
83 km
5 km
Jul 29, 1998
16 km WNW of Froid, Montana
M3.8
72 km
5 km
Nov 11, 1998
10 km SW of Grenora, North Dakota
M3.5
55 km
5 km
Sep 28, 2012
22 km ESE of Williston, North Dakota
M3.3
37 km
5 km
May 6, 2014
12 km NNW of Knife River, Montana
M2.6
73 km
8 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
87 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF3. Total: 1 fatality, 39 injuries.
Date
Rating
Distance
Path
Fatalities
Jul 11, 1974
EF3
79 km
0.1 mi
0
Jun 14, 1950
EF3
95 km
23.7 mi
0
Jul 9, 2018
EF2
52 km
0.5 mi
1
May 26, 2014
EF2
58 km
0.5 mi
0
Jun 27, 1982
EF2
9 km
0.4 mi
0
Jun 5, 1976
EF2
74 km
2.0 mi
0
Jun 25, 1975
EF2
28 km
0.1 mi
0
Jun 11, 1972
EF2
83 km
9.1 mi
0
Jul 2, 1971
EF2
64 km
10.0 mi
0
Sep 21, 1969
EF2
62 km
1.0 mi
0
Jun 13, 1953
EF2
36 km
0.1 mi
0
Jul 1, 1952
EF2
35 km
9.7 mi
0
Jul 9, 2018
EF1
93 km
2.1 mi
0
Jun 30, 2015
EF1
69 km
17.5 mi
0
Jun 11, 2007
EF1
73 km
3.0 mi
0
Jul 21, 1999
EF1
29 km
1.0 mi
0
Jul 2, 1990
EF1
99 km
0.1 mi
0
Jun 26, 1990
EF1
99 km
1.0 mi
0
Jun 11, 1984
EF1
86 km
3.0 mi
0
Jul 13, 1980
EF1
51 km
0.1 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 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
56 km
1999
GAP/ROUGH CREEK
53,708
50 km
1988
BAINVILLE
12,790
17 km
2016
FLAGSTAFF HILL
9,129
88 km
1999
ROUGH CRK
7,887
69 km
2017
YOOPER
7,834
62 km
2021
SMITH
5,212
77 km
1999
ANTELOPE
5,118
78 km
2017
MAGPIE FIRE
5,056
87 km
2021
HORSE PASTURE
4,431
63 km
2015
RIDGE ROAD
3,390
56 km
1988
MONTANA LINE
3,307
42 km
1988
CINNAMON CREEK
3,204
75 km
2024
CHARLSON
3,055
74 km
2021
ELKHORN
2,784
92 km
2021
13 MILE FIRE
2,585
30 km
2007
W-RX-F SANDHILLS SUB UNIT B
2,381
55 km
1988
FANTAIL
2,341
87 km
2004
MAGPIE CAMP
2,114
92 km
2018
MTMLR-FY18-RX-WUI DEEP LAKE
2,088
58 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
14°F (-10°C)
0.5 in
Coldest
February
19°F (-7°C)
0.4 in
Driest
March
30°F (-1°C)
0.6 in
April
45°F (7°C)
1.1 in
May
57°F (14°C)
2.1 in
June
66°F (19°C)
2.6 in
Wettest
July
71°F (22°C)
2.1 in
Warmest
August
70°F (21°C)
1.5 in
September
58°F (15°C)
1.5 in
October
46°F (8°C)
0.8 in
November
28°F (-2°C)
0.5 in
December
15°F (-9°C)
0.5 in
Trenton has a seasonal temperature swing of 57°F / from 14°F in January to 71°F in July. Total annual precipitation is 14.1 inches, with June being the wettest month (2.6") and February the driest (0.4").