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Weather & Climate in Myrtle, MN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Myrtle has a cool climate with an average annual temperature of 45°F (7°C). Winters average 14°F in January while summers reach 72°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 35.8 inches. The area receives 39.5 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 36. The city sits at an elevation of 1,256 feet.
Temperature
14°F Jan (-10°C)
72°F Jul (22°C)
| Annual Average | 45.2°F |
| 16% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,256 ft (383 m) |
| Area | 0.1 sq mi (0.3 km²) |
| Population Density | 400/sq mi |
| Coordinates | 43.5632°N, 93.1630°W |
| Timezone | America/Chicago |
| County | Freeborn County County |
| Nearest Airport | Owatonna Degner Regional (OWA) 39 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 51.0 / 100 |
| Social Vulnerability | 35.9 / 100 |
| Community Resilience | 89.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Very 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 | 97 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
588 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 44 fatalities, 955 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 15, 1968 | EF5 | 88 km | 62.1 mi | 13 |
| Oct 14, 1966 | EF5 | 94 km | 9.7 mi | 6 |
| Jun 17, 2010 | EF4 | 39 km | 16.9 mi | 1 |
| Jul 12, 1971 | EF4 | 69 km | 10.9 mi | 0 |
| Apr 30, 1967 | EF4 | 13 km | 7.6 mi | 0 |
| Apr 30, 1967 | EF4 | 39 km | 20.1 mi | 6 |
| Apr 30, 1967 | EF4 | 22 km | 38.7 mi | 5 |
| Apr 30, 1967 | EF4 | 29 km | 13.3 mi | 0 |
| May 5, 1965 | EF4 | 42 km | 41.6 mi | 0 |
| Sep 16, 1962 | EF4 | 73 km | 0.5 mi | 0 |
| Sep 1, 1961 | EF4 | 88 km | 26.6 mi | 0 |
| May 10, 1953 | EF4 | 62 km | 26.6 mi | 0 |
| May 10, 1953 | EF4 | 63 km | 162.0 mi | 2 |
| Jun 12, 2013 | EF3 | 87 km | 6.2 mi | 0 |
| Jun 17, 2010 | EF3 | 26 km | 18.2 mi | 0 |
| Jun 17, 2010 | EF3 | 33 km | 4.3 mi | 0 |
| Jun 17, 2010 | EF3 | 22 km | 5.0 mi | 0 |
| Jun 11, 2004 | EF3 | 53 km | 12.0 mi | 0 |
| Jul 19, 1994 | EF3 | 79 km | 23.0 mi | 0 |
| Jun 18, 1994 | EF3 | 63 km | 6.0 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 | 65 km |
| 1990 | UNNAMED | 598 | 99 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 14°F (-10°C) | 0.9 in | Coldest |
| February | 19°F (-7°C) | 0.8 in | Driest |
| March | 32°F (-0°C) | 1.8 in | |
| April | 46°F (8°C) | 2.9 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 68°F (20°C) | 4.1 in | |
| July | 72°F (22°C) | 4.2 in | Warmest, Wettest |
| August | 69°F (21°C) | 4.2 in | |
| September | 61°F (16°C) | 3.7 in | |
| October | 49°F (9°C) | 2.4 in | |
| November | 33°F (0°C) | 1.7 in | |
| December | 18°F (-8°C) | 1.1 in |
Myrtle has a seasonal temperature swing of 58°F / from 14°F in January to 72°F in July. Total annual precipitation is 31.4 inches, with July being the wettest month (4.2") and February the driest (0.8").