All Countries
Weather & Climate in Portland, MI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Portland experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 24°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 33.3 inches. The area receives 50.2 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 717 feet.
Temperature
24°F Jan (-5°C)
72°F Jul (22°C)
| Annual Average | 48.5°F |
| 10% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 717 ft (219 m) |
| Area | 2.8 sq mi (7.2 km²) |
| Population Density | 1,453/sq mi |
| Coordinates | 42.8698°N, 84.8989°W |
| Timezone | America/Detroit |
| County | Clinton County County |
| Nearest Airport | Capital Region International (LAN) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 47.0 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 90.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| May 2, 2015 | 5 km S of Galesburg, Michigan | M4.2 | 83 km | 4 km |
| Sep 2, 1994 | 5 km SSW of DeWitt, Michigan | M3.5 | 25 km | 5 km |
| Jun 30, 2015 | 5 km NNE of Burlington, Michigan | M3.3 | 81 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
381 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 140 fatalities, 1,357 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 8, 1953 | EF5 | 89 km | 18.9 mi | 116 |
| Apr 2, 1977 | EF4 | 85 km | 12.4 mi | 0 |
| Apr 2, 1977 | EF4 | 50 km | 16.6 mi | 1 |
| Apr 21, 1967 | EF4 | 11 km | 12.0 mi | 0 |
| Apr 11, 1965 | EF4 | 20 km | 21.0 mi | 1 |
| Apr 11, 1965 | EF4 | 85 km | 20.6 mi | 5 |
| Mar 15, 2012 | EF3 | 93 km | 7.6 mi | 0 |
| Aug 24, 2007 | EF3 | 32 km | 6.5 mi | 0 |
| Mar 27, 1991 | EF3 | 55 km | 2.0 mi | 0 |
| Aug 8, 1984 | EF3 | 99 km | 0.8 mi | 0 |
| Jun 15, 1982 | EF3 | 72 km | 13.0 mi | 1 |
| May 13, 1980 | EF3 | 92 km | 10.6 mi | 5 |
| May 11, 1974 | EF3 | 89 km | 0.9 mi | 1 |
| Apr 21, 1967 | EF3 | 71 km | 13.6 mi | 0 |
| Apr 11, 1965 | EF3 | 41 km | 14.1 mi | 0 |
| Apr 11, 1965 | EF3 | 80 km | 14.2 mi | 0 |
| May 7, 2024 | EF2 | 99 km | 10.9 mi | 0 |
| Aug 24, 2023 | EF2 | 54 km | 12.0 mi | 2 |
| Mar 14, 2019 | EF2 | 54 km | 18.2 mi | 0 |
| May 28, 2013 | EF2 | 92 km | 5.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: ALLEGAN6 (1,077 acres, 1988).
| Year | Name | Acres Burned | Distance |
| 1988 | ALLEGAN6 | 1,077 | 99 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 1.7 in | Coldest |
| February | 24°F (-4°C) | 1.5 in | Driest |
| March | 34°F (1°C) | 2.4 in | |
| April | 46°F (8°C) | 3.1 in | |
| May | 58°F (14°C) | 3.0 in | |
| June | 67°F (19°C) | 3.5 in | |
| July | 72°F (22°C) | 2.7 in | Warmest |
| August | 69°F (20°C) | 3.7 in | |
| September | 61°F (16°C) | 3.9 in | Wettest |
| October | 50°F (10°C) | 2.6 in | |
| November | 38°F (3°C) | 2.8 in | |
| December | 27°F (-3°C) | 2.4 in |
Portland has a seasonal temperature swing of 48°F / from 24°F in January to 72°F in July. Total annual precipitation is 33.2 inches, with September being the wettest month (3.9") and February the driest (1.5").