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Weather & Climate in Winnett, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Winnett has a cool climate with an average annual temperature of 44°F (7°C). Winters average 20°F in January while summers reach 70°F in July. The area gets 273 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 14.6 inches (drier than the 38-inch national average). The area receives 33.1 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 26 / among the cleanest air in the country. The city sits at an elevation of 2,950 feet.
Temperature
20°F Jan (-7°C)
70°F Jul (21°C)
| Annual Average | 43.9°F |
| 19% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 2,950 ft (899 m) |
| Area | 1.0 sq mi (2.5 km²) |
| Population Density | 170/sq mi |
| Coordinates | 47.0043°N, 108.3466°W |
| Timezone | America/Denver |
| County | Petroleum County County |
| Nearest Airport | Billings Logan International (BIL) 83 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 1.3 / 100 |
| Social Vulnerability | 27.4 / 100 |
| Community Resilience | 12.9 / 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 | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.
| Jul 6, 2021 | 27 km SSE of Melstone, Montana | M3.6 | 84 km | 10 km |
| Dec 5, 1991 | 15 km WSW of Hays, Montana | M3.0 | 113 km | 10 km |
| May 21, 2013 | 32 km NE of Melstone, Montana | M2.8 | 68 km | 7 km |
| Oct 16, 2011 | Eastern Montana | M2.7 | 45 km | 21 km |
| Jul 10, 2021 | 24 km SSE of Malta, Montana | M2.7 | 134 km | 10 km |
| Jul 15, 2015 | 48 km E of Zortman, Montana | M2.5 | 103 km | 23 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
36 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 3 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 8, 2002 | EF2 | 81 km | 10.0 mi | 0 |
| Aug 14, 1999 | EF2 | 82 km | 5.0 mi | 0 |
| May 4, 1986 | EF2 | 76 km | 0.1 mi | 0 |
| May 28, 1981 | EF2 | 66 km | 1.5 mi | 0 |
| Aug 7, 1962 | EF2 | 33 km | 2.0 mi | 0 |
| May 21, 2016 | EF1 | 89 km | 2.0 mi | 0 |
| Jul 7, 2020 | EF0 | 23 km | 0.2 mi | 0 |
| Jul 7, 2020 | EF0 | 4 km | 0.1 mi | 0 |
| Jun 27, 2019 | EF0 | 95 km | 0.1 mi | 0 |
| Jul 8, 2013 | EF0 | 57 km | 0.5 mi | 0 |
| Jun 28, 2005 | EF0 | 76 km | 0.3 mi | 0 |
| Jun 28, 2005 | EF0 | 8 km | 2.0 mi | 0 |
| Jun 25, 2005 | EF0 | 38 km | 1.0 mi | 0 |
| Aug 26, 2004 | EF0 | 82 km | — | 0 |
| Apr 25, 2003 | EF0 | 57 km | 2.0 mi | 0 |
| Aug 5, 2002 | EF0 | 98 km | 4.0 mi | 0 |
| Aug 5, 2002 | EF0 | 82 km | 0.1 mi | 0 |
| Jul 8, 2002 | EF0 | 24 km | 2.0 mi | 0 |
| Jun 22, 2002 | EF0 | 24 km | 0.1 mi | 0 |
| Jul 31, 2001 | EF0 | 85 km | 8.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: BRIDGE COULEE (222,571 acres, 2017).
| Year | Name | Acres Burned | Distance |
| 2017 | BRIDGE COULEE | 222,571 | 47 km |
| 1984 | HAWK CREEK | 157,778 | 83 km |
| 2003 | MISSOURI BREAKS COMPLEX | 137,947 | 78 km |
| 2008 | DUNN MTN. ASSIST | 105,494 | 88 km |
| 2012 | DELPHIA | 40,396 | 68 km |
| 2017 | SOUTH BREAKS | 39,217 | 67 km |
| 2006 | LOST CREEK (BLACK PULASKI COMPLEX) | 38,550 | 76 km |
| 2006 | SODA CREEK (BLACK PULASKI COMPLEX) | 33,767 | 62 km |
| 2020 | BOBCAT | 31,020 | 77 km |
| 1999 | FISHEL CREEK | 28,611 | 58 km |
| 2010 | RAVEN | 26,631 | 62 km |
| 2021 | MUSSELSHELL TRAIL RD | 22,723 | 96 km |
| 2012 | DAHL | 21,448 | 83 km |
| 2006 | CHALK BUTTE (BLACK PULASKI COMPLEX) | 19,339 | 98 km |
| 2006 | LODGEPOLE (BLACK PULASKI COMPLEX) | 15,248 | 51 km |
| 2021 | DEVILS CREEK | 15,077 | 86 km |
| 2021 | SOUTH MOCCASIN | 12,727 | 91 km |
| 2012 | WOLF CREEK | 12,168 | 57 km |
| 2017 | JULY | 11,409 | 100 km |
| 1994 | CK CREEK | 11,206 | 73 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 0.6 in | Coldest |
| February | 27°F (-3°C) | 0.3 in | Driest |
| March | 35°F (2°C) | 0.7 in | |
| April | 45°F (7°C) | 1.2 in | |
| May | 54°F (12°C) | 2.8 in | Wettest |
| June | 64°F (18°C) | 2.4 in | |
| July | 70°F (21°C) | 1.5 in | Warmest |
| August | 69°F (21°C) | 1.3 in | |
| September | 58°F (15°C) | 1.1 in | |
| October | 47°F (8°C) | 0.8 in | |
| November | 33°F (0°C) | 0.4 in | |
| December | 24°F (-5°C) | 0.5 in |
Winnett has a seasonal temperature swing of 50°F / from 20°F in January to 70°F in July. Total annual precipitation is 13.6 inches, with May being the wettest month (2.8") and February the driest (0.3").