Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Spring Valley has a cool climate with an average annual temperature of 45°F (7°C). Winters average 15°F in January while summers reach 71°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 34.7 inches. The area receives 53.1 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 36. The city sits at an elevation of 1,278 feet.
Temperature
15°F Jan (-10°C)71°F Jul (21°C)
Annual Average
44.8°F
17% below US avg
January Average
15°F (-10°C)
July Average
71°F (21°C)
Sunny Days
260 days/yr
Geography
Elevation
1,278 ft (390 m)
Area
2.5 sq mi (6.6 km²)
Population Density
796/sq mi
Coordinates
43.6888°N, 92.3898°W
Timezone
America/Chicago
County
Fillmore County County
Nearest Airport
Rochester International (RST) 16 miles away
Precipitation & Snow
Annual Rainfall34.7"
9% below US avg
Snowfall53.1"
Wettest Month (Jul)4.57"
Driest Month (Feb)0.79"
Air Quality
AQI Median
36.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
49.8 / 100
Social Vulnerability
32.7 / 100
Community Resilience
90.7 / 100
Hazard Breakdown
Tornado
Relatively Low
Hurricane
No Rating
Earthquake
Very Low
Wildfire
Very Low
Flood
Relatively Low
Hail
Relatively Low
Strong Wind
Relatively Low
Heat Wave
Very Low
Winter Weather
Relatively Low
Lightning
Very Low
Ice Storm
Relatively Low
Drought
Relatively Low
Cold Wave
Relatively Moderate
Landslide
Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990.
Strongest on record: M2.8.
Apr 25, 2017
Near Mankato, Minnesota
M2.8
141 km
0 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
500 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 22 fatalities, 243 injuries.
Date
Rating
Distance
Path
Fatalities
Jul 12, 1971
EF4
51 km
10.9 mi
0
Apr 30, 1967
EF4
92 km
20.1 mi
6
Apr 30, 1967
EF4
76 km
13.3 mi
0
Apr 30, 1967
EF4
85 km
38.7 mi
5
Apr 30, 1967
EF4
68 km
7.6 mi
0
May 5, 1965
EF4
57 km
41.6 mi
0
Sep 16, 1962
EF4
32 km
0.5 mi
0
May 10, 1953
EF4
27 km
162.0 mi
2
Jun 17, 2010
EF3
83 km
18.2 mi
0
Jun 17, 2010
EF3
62 km
4.3 mi
0
Jun 17, 2010
EF3
69 km
5.0 mi
0
Jun 11, 2004
EF3
35 km
12.0 mi
0
Jul 19, 1994
EF3
45 km
23.0 mi
0
Jun 7, 1984
EF3
77 km
14.0 mi
0
May 17, 1982
EF3
73 km
46.0 mi
0
Jun 5, 1980
EF3
94 km
26.9 mi
0
May 28, 1974
EF3
78 km
3.8 mi
0
Jul 12, 1971
EF3
65 km
15.4 mi
0
Jun 24, 1971
EF3
83 km
0.1 mi
1
Apr 30, 1967
EF3
77 km
17.2 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
2 wildfires (100+ acres) recorded within 100 km.
Largest: SNAKE TRAIL (1,496 acres, 2024).
Year
Name
Acres Burned
Distance
2024
SNAKE TRAIL
1,496
96 km
2007
BEAVER CUTOFF
982
61 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
15°F (-10°C)
1.0 in
Coldest
February
19°F (-7°C)
0.8 in
Driest
March
31°F (-1°C)
2.0 in
April
45°F (7°C)
3.2 in
May
58°F (14°C)
4.1 in
June
67°F (20°C)
4.3 in
July
71°F (21°C)
4.6 in
Warmest, Wettest
August
69°F (20°C)
4.6 in
September
60°F (16°C)
3.8 in
October
48°F (9°C)
2.6 in
November
32°F (0°C)
2.0 in
December
18°F (-8°C)
1.1 in
Spring Valley has a seasonal temperature swing of 56°F / from 15°F in January to 71°F in July. Total annual precipitation is 34.0 inches, with July being the wettest month (4.6") and February the driest (0.8").