Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gannett has a cool climate with an average annual temperature of 42°F (6°C). Winters average 19°F in January while summers reach 67°F in July. The area gets 302 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 13.0 inches (drier than the 38-inch national average). The area receives 45.6 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 33. The city sits at an elevation of 4,903 feet.
Temperature
19°F Jan (-7°C)67°F Jul (19°C)
Annual Average
42.4°F
21% below US avg
January Average
19°F (-7°C)
July Average
67°F (19°C)
Sunny Days
302 days/yr
Geography
Elevation
4,903 ft (1,494 m)
Area
2.6 sq mi (6.8 km²)
Population Density
133/sq mi
Coordinates
43.3521°N, 114.1677°W
Timezone
America/Boise
County
Camas County County
Nearest Airport
Joslin Field/Magic Valley Regional (TWF) 62 miles away
Precipitation & Snow
Annual Rainfall13.0"
66% below US avg
Snowfall45.6"
Wettest Month (Dec)2.05"
Driest Month (Jul)0.59"
Air Quality
AQI Median
33.0
Rating
Good
Natural Hazard Risk
Overall Risk
Very Low
Risk Score
6.0 / 100
Social Vulnerability
46.3 / 100
Community Resilience
37.0 / 100
Hazard Breakdown
Tornado
Very Low
Earthquake
Very Low
Wildfire
Relatively Low
Flood
Very Low
Hail
Very Low
Strong Wind
Very Low
Heat Wave
Very Low
Winter Weather
Very Low
Lightning
Very Low
Ice Storm
Very Low
Drought
Very Low
Cold Wave
Very Low
Landslide
Very Low
Volcano
Very Low
Avalanche
Relatively High
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1,403 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M6.5.
Mar 31, 2020
Stanley, Idaho
M6.5
145 km
12 km
Jan 3, 2015
9 km E of Challis, Idaho
M5.0
129 km
9 km
Apr 13, 2014
15 km NNW of Challis, Idaho
M4.8
142 km
4 km
Apr 1, 2020
21 km WNW of Stanley, Idaho
M4.8
135 km
10 km
Jun 7, 1994
18 km E of Challis, Idaho
M4.8
128 km
5 km
May 4, 1992
20 km E of Challis, Idaho
M4.6
130 km
10 km
Jun 25, 2020
27 km NW of Stanley, Idaho
M4.6
142 km
8 km
Apr 1, 2020
23 km NW of Stanley, Idaho
M4.4
136 km
7 km
Apr 14, 2014
13 km NW of Challis, Idaho
M4.4
139 km
7 km
May 6, 1992
17 km E of Challis, Idaho
M4.4
126 km
5 km
May 14, 2020
31 km NW of Stanley, Idaho
M4.4
145 km
13 km
Dec 28, 1991
southern Idaho
M4.4
134 km
5 km
May 21, 2020
26 km NW of Stanley, Idaho
M4.4
140 km
6 km
Jan 28, 1995
33 km NNE of Stanley, Idaho
M4.3
137 km
5 km
Mar 22, 1992
11 km NE of Challis, Idaho
M4.3
137 km
5 km
Jun 8, 2025
24 km E of Clayton, Idaho
M4.3
102 km
7 km
Feb 17, 1992
33 km NNE of Stanley, Idaho
M4.3
136 km
5 km
Jun 9, 2020
11 km NW of Stanley, Idaho
M4.2
125 km
10 km
Jun 14, 2020
10 km NW of Stanley, Idaho
M4.2
125 km
8 km
Aug 13, 1998
3 km ESE of Challis, Idaho
M4.2
127 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
56 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF2.
Date
Rating
Distance
Path
Fatalities
May 18, 1991
EF2
91 km
0.2 mi
0
Jun 9, 1990
EF2
74 km
0.2 mi
0
Sep 11, 1968
EF2
76 km
0.5 mi
0
May 21, 1992
EF1
74 km
0.2 mi
0
Jun 10, 1990
EF1
84 km
0.2 mi
0
Apr 20, 1988
EF1
64 km
1.0 mi
0
Apr 20, 1988
EF1
77 km
1.0 mi
0
Jul 21, 1987
EF1
26 km
0.2 mi
0
Jul 18, 1987
EF1
53 km
1.0 mi
0
Aug 10, 1986
EF1
100 km
2.0 mi
0
Jun 24, 1986
EF1
99 km
0.5 mi
0
Sep 8, 1985
EF1
85 km
0.2 mi
0
May 2, 1985
EF1
58 km
0.1 mi
0
Jun 7, 1972
EF1
80 km
0.5 mi
0
Jul 5, 1961
EF1
70 km
5.1 mi
0
Jun 2, 1961
EF1
92 km
0.1 mi
0
Jun 5, 1957
EF1
95 km
0.1 mi
0
Jun 3, 1956
EF1
72 km
0.1 mi
0
Aug 2, 2019
EF0
96 km
1.0 mi
0
Jun 21, 2018
EF0
79 km
5.1 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
4 volcanoes within 200 km.
Closest: Black Butte Crater Lava Field (24 km).
Name
Type
Elevation
Last Eruption
Distance
Black Butte Crater Lava Field
Shield
1,478 m (4,849 ft)
-8400
24 km
Craters of the Moon
Pyroclastic cone(s)
2,005 m (6,578 ft)
-130
55 km
Wapi Lava Field
Shield
1,604 m (5,262 ft)
-300
93 km
Hell's Half Acre
Shield
1,631 m (5,351 ft)
-3250
140 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km.
Largest: LONG BUTTE (302,546 acres, 2010).
Year
Name
Acres Burned
Distance
2010
LONG BUTTE
302,546
99 km
1996
COXS WELL
219,424
89 km
2006
CRYSTAL
218,581
86 km
1996
RICHFIELDS
178,385
39 km
1992
BLACK RIDGE
147,833
41 km
1999
MULE BUTTE
138,102
80 km
2013
BEAVER CREEK
111,286
39 km
2012
FLAT TOP 2
102,340
45 km
1990
THORN CREEK
70,365
33 km
2018
SHARPS
63,895
22 km
2000
FLATTOP
56,792
97 km
2017
MAMMOTH CAVE
50,391
22 km
2007
CASTLE ROCK
48,430
42 km
2005
RUPERT
45,361
69 km
2007
RED BRIDGE
44,096
59 km
2005
VALLEY ROAD
40,801
93 km
2022
ROSS FORK
40,690
80 km
2016
LAIDLAW
40,551
47 km
2011
BLAIR
40,086
87 km
2008
SOUTH BARKER WFU
36,091
85 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
19°F (-7°C)
2.0 in
Coldest
February
24°F (-5°C)
1.6 in
March
32°F (-0°C)
1.5 in
April
41°F (5°C)
1.0 in
May
49°F (10°C)
1.4 in
June
57°F (14°C)
1.2 in
July
67°F (19°C)
0.6 in
Warmest, Driest
August
65°F (18°C)
0.7 in
September
56°F (13°C)
0.9 in
October
46°F (8°C)
0.8 in
November
32°F (-0°C)
1.7 in
December
21°F (-6°C)
2.1 in
Wettest
Gannett has a seasonal temperature swing of 47°F / from 19°F in January to 67°F in July. Total annual precipitation is 15.4 inches, with December being the wettest month (2.1") and July the driest (0.6").