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Weather & Climate in Big Piney, WY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Big Piney has a cool climate with an average annual temperature of 37°F (3°C). Winters average 12°F in January while summers reach 62°F in July. The area gets 310 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 7.7 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 34. The city sits at an elevation of 6,834 feet.
Temperature
12°F Jan (-11°C)
62°F Jul (17°C)
| Annual Average | 36.5°F |
| 32% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 310 days/yr |
Geography
| Elevation | 6,834 ft (2,083 m) |
| Area | 0.5 sq mi (1.2 km²) |
| Population Density | 873/sq mi |
| Coordinates | 42.5402°N, 110.1193°W |
| Timezone | America/Denver |
| County | Lincoln County County |
| Nearest Airport | Jackson Hole (JAC) 80 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 51.9 / 100 |
| Social Vulnerability | 29.1 / 100 |
| Community Resilience | 15.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1,313 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.
| Feb 3, 1994 | 4 km SSE of Auburn, Wyoming | M5.8 | 74 km | 8 km |
| Apr 21, 2001 | 29 km WSW of Freedom, Idaho | M5.3 | 113 km | 1 km |
| Sep 2, 2017 | 12 km E of Soda Springs, Idaho | M5.3 | 110 km | 10 km |
| Jan 7, 2004 | 20 km ESE of Kelly, Wyoming | M5.0 | 117 km | 3 km |
| Sep 10, 2017 | 9 km NNW of Georgetown, Idaho | M5.0 | 106 km | 10 km |
| Apr 15, 2010 | 9 km NE of Randolph, Utah | M4.9 | 122 km | 10 km |
| Aug 5, 2010 | 19 km E of Kelly, Wyoming | M4.8 | 120 km | 5 km |
| Sep 21, 2013 | 20 km W of Fort Washakie, Wyoming | M4.8 | 94 km | 76 km |
| Feb 11, 1994 | 3 km SSE of Auburn, Wyoming | M4.8 | 76 km | 5 km |
| Aug 27, 2016 | 4 km ENE of Bondurant, Wyoming | M4.8 | 78 km | 12 km |
| Sep 11, 2017 | 9 km NW of Georgetown, Idaho | M4.7 | 108 km | 8 km |
| Sep 3, 2017 | 15 km ESE of Soda Springs, Idaho | M4.7 | 108 km | 10 km |
| Sep 3, 2017 | 10 km E of Soda Springs, Idaho | M4.7 | 111 km | 8 km |
| Sep 10, 2017 | 12 km ESE of Soda Springs, Idaho | M4.7 | 111 km | 5 km |
| Dec 28, 1993 | 38 km NE of Bondurant, Wyoming | M4.7 | 105 km | 8 km |
| Feb 4, 1994 | 4 km WNW of Fairview, Wyoming | M4.7 | 77 km | 5 km |
| Sep 6, 2017 | 11 km NNW of Georgetown, Idaho | M4.6 | 109 km | 10 km |
| Feb 7, 1994 | 4 km SW of Fairview, Wyoming | M4.5 | 75 km | 5 km |
| Sep 4, 2017 | 13 km ESE of Soda Springs, Idaho | M4.5 | 110 km | 6 km |
| Nov 10, 1992 | 32 km WNW of Freedom, Idaho | M4.4 | 122 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
20 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.
| Date | Rating | Distance | Path | Fatalities |
| Sep 4, 2016 | EF1 | 60 km | 2.4 mi | 0 |
| Jul 10, 2001 | EF1 | 86 km | 5.0 mi | 0 |
| Jul 24, 1980 | EF1 | 69 km | 0.1 mi | 0 |
| Jul 30, 1975 | EF1 | 38 km | 0.1 mi | 0 |
| Sep 4, 2024 | EF0 | 23 km | 0.1 mi | 0 |
| Apr 26, 2019 | EF0 | 2 km | 0.1 mi | 0 |
| May 31, 2014 | EF0 | 89 km | 0.3 mi | 0 |
| May 7, 2014 | EF0 | 93 km | 0.5 mi | 0 |
| Sep 15, 2013 | EF0 | 83 km | 0.1 mi | 0 |
| Jun 10, 1998 | EF0 | 100 km | 0.1 mi | 0 |
| Jul 19, 1997 | EF0 | 11 km | 3.0 mi | 0 |
| Jun 14, 1997 | EF0 | 24 km | 0.5 mi | 0 |
| Sep 9, 1991 | EF0 | 40 km | 0.5 mi | 0 |
| Sep 9, 1991 | EF0 | 54 km | 0.4 mi | 0 |
| May 2, 1991 | EF0 | 9 km | 0.1 mi | 0 |
| May 2, 1991 | EF0 | 43 km | 0.1 mi | 0 |
| Aug 4, 1990 | EF0 | 56 km | 0.1 mi | 0 |
| Jul 24, 1990 | EF0 | 87 km | 0.1 mi | 0 |
| Jun 10, 1969 | EF0 | 84 km | 0.5 mi | 0 |
| Jun 21, 1962 | EF0 | 54 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: FONTENELLE (58,125 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | FONTENELLE | 58,125 | 33 km |
| 2018 | ROOSEVELT | 55,330 | 62 km |
| 2012 | ALPINE LAKE | 39,158 | 91 km |
| 2016 | CLIFF CREEK | 36,131 | 87 km |
| 1988 | FAYETTE | 29,234 | 60 km |
| 2000 | FONTENELLE | 14,894 | 53 km |
| 2008 | NEW FORK | 14,481 | 64 km |
| 2002 | SOUTH FORK II | 13,803 | 98 km |
| 2007 | HORSE CREEK | 8,149 | 49 km |
| 2000 | BLIND TRAIL | 7,758 | 71 km |
| 2010 | POLE CREEK STANDS | 6,900 | 66 km |
| 2018 | MARTEN CREEK | 6,383 | 47 km |
| 2010 | BULL | 5,496 | 94 km |
| 1996 | FAYETTE | 5,308 | 50 km |
| 2005 | ROCK CREEK RX | 4,302 | 92 km |
| 2002 | COMMISARY | 3,840 | 59 km |
| 2000 | BOULDER | 3,755 | 92 km |
| 2010 | GIRAFFE CREEK | 3,552 | 77 km |
| 2017 | POLE CREEK | 3,395 | 61 km |
| 1989 | ANNS | 3,298 | 86 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 0.6 in | Coldest |
| February | 16°F (-9°C) | 0.5 in | |
| March | 26°F (-3°C) | 0.5 in | Driest |
| April | 36°F (2°C) | 0.7 in | |
| May | 46°F (8°C) | 1.2 in | Wettest |
| June | 55°F (13°C) | 1.1 in | |
| July | 62°F (17°C) | 0.9 in | Warmest |
| August | 59°F (15°C) | 0.9 in | |
| September | 50°F (10°C) | 1.0 in | |
| October | 39°F (4°C) | 0.6 in | |
| November | 24°F (-5°C) | 0.6 in | |
| December | 13°F (-11°C) | 0.6 in |
Big Piney has a seasonal temperature swing of 50°F / from 12°F in January to 62°F in July. Total annual precipitation is 9.2 inches, with May being the wettest month (1.2") and March the driest (0.5").