Weather & Climate in Plymouth, MN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Plymouth experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 16°F in January while summers reach 73°F in July. Annual precipitation totals 30.7 inches. The area receives 54.3 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 42. 66% of days have good air quality. The city sits at an elevation of 981 feet.
Temperature
16°F Jan (-9°C)
73°F Jul (23°C)
| Annual Average | 45.8°F |
| 15% below US avg | |
| January Average | 16°F (-9°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 981 ft (299 m) |
| Area | 35.3 sq mi (91.5 km²) |
| Population Density | 2,431/sq mi |
| Coordinates | 45.0223°N, 93.4629°W |
| Timezone | America/Chicago |
| County | Hennepin County County |
| Nearest Airport | Minneapolis-St Paul International/Wold-Chamberlain (MSP) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 66.4% |
| Unhealthy Days | 4 |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.3 / 100 |
| Social Vulnerability | 20.3 / 100 |
| Community Resilience | 98.1 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Very High |
| Strong Wind | Very High |
| Heat Wave | Relatively High |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.1.
| Feb 9, 1994 | 6 km NNE of Blomkest, Minnesota | M3.1 | 121 km | 5 km |
| Apr 25, 2017 | Near Mankato, Minnesota | M2.8 | 102 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
510 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 59 fatalities, 1,199 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 4, 1958 | EF5 | 90 km | 33.7 mi | 21 |
| Jul 3, 1983 | EF4 | 25 km | 1.0 mi | 0 |
| May 6, 1965 | EF4 | 20 km | 6.9 mi | 0 |
| May 6, 1965 | EF4 | 8 km | 17.3 mi | 6 |
| May 6, 1965 | EF4 | 14 km | 6.8 mi | 3 |
| May 6, 1965 | EF4 | 35 km | 12.3 mi | 3 |
| May 21, 1957 | EF4 | 77 km | 9.2 mi | 0 |
| Jun 19, 1951 | EF4 | 73 km | 52.6 mi | 1 |
| May 25, 2008 | EF3 | 37 km | 6.0 mi | 1 |
| Mar 29, 1998 | EF3 | 100 km | 12.0 mi | 1 |
| Mar 29, 1998 | EF3 | 86 km | 6.0 mi | 0 |
| Jul 1, 1997 | EF3 | 45 km | 5.0 mi | 0 |
| Jun 16, 1992 | EF3 | 60 km | 10.0 mi | 0 |
| Jul 27, 1987 | EF3 | 77 km | 30.0 mi | 0 |
| Jul 23, 1987 | EF3 | 14 km | 5.0 mi | 0 |
| Apr 26, 1984 | EF3 | 18 km | 5.5 mi | 1 |
| Jun 14, 1981 | EF3 | 27 km | 16.2 mi | 1 |
| Sep 3, 1980 | EF3 | 82 km | 3.8 mi | 1 |
| Jul 30, 1977 | EF3 | 99 km | 9.1 mi | 0 |
| May 6, 1965 | EF3 | 68 km | 15.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNIT 4 (5,887 acres, 2002).
| Year | Name | Acres Burned | Distance |
| 2002 | UNIT 4 | 5,887 | 59 km |
| 2003 | UNITS 37 38 39 A | 4,879 | 53 km |
| 1998 | UNITS 1617 | 4,649 | 58 km |
| 2005 | RX HFR 05 | 4,253 | 58 km |
| 2009 | BU9 | 4,112 | 60 km |
| 2007 | WUI 07 - UNIT 36 | 4,025 | 52 km |
| 2000 | UNIT 25 | 3,412 | 52 km |
| 2009 | BU11 | 3,242 | 56 km |
| 1997 | BIG | 2,987 | 54 km |
| 2009 | UNNAMED | 2,904 | 38 km |
| 2003 | UNITS 34 33 W | 2,637 | 53 km |
| 2024 | UNIT 8E RX | 2,551 | 58 km |
| 1992 | SHARPTAIL | 2,288 | 52 km |
| 1988 | UNNAMED | 2,243 | 96 km |
| 2010 | WUI 10 UNIT D | 2,042 | 52 km |
| 1996 | UNNAMED | 1,906 | 52 km |
| 2000 | UNNAMED | 1,850 | 96 km |
| 2006 | UNIT 4 | 1,732 | 60 km |
| 2009 | UNIT 23 24 26 | 1,644 | 55 km |
| 1995 | ANTLER | 1,603 | 52 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 16°F (-9°C) | 0.6 in | Coldest, Driest |
| February | 20°F (-7°C) | 0.6 in | |
| March | 33°F (0°C) | 1.4 in | |
| April | 46°F (8°C) | 2.9 in | |
| May | 58°F (15°C) | 4.3 in | |
| June | 69°F (20°C) | 4.4 in | Wettest |
| July | 73°F (23°C) | 4.2 in | Warmest |
| August | 71°F (22°C) | 4.1 in | |
| September | 62°F (17°C) | 3.2 in | |
| October | 48°F (9°C) | 2.6 in | |
| November | 34°F (1°C) | 1.5 in | |
| December | 21°F (-6°C) | 0.9 in |
Plymouth has a seasonal temperature swing of 57°F / from 16°F in January to 73°F in July. Total annual precipitation is 30.7 inches, with June being the wettest month (4.4") and January the driest (0.6").