Weather & Climate in Hyattville, WY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hyattville experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 26°F in January while summers reach 73°F in July. Annual precipitation totals 7.4 inches (drier than the 38-inch national average). The area receives 21.2 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 39. 89% of days have good air quality. The city sits at an elevation of 4,467 feet.
Temperature
26°F Jan (-3°C)
73°F Jul (23°C)
| Annual Average | 47.8°F |
| 11% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 4,467 ft (1,362 m) |
| Area | 4.1 sq mi (10.6 km²) |
| Population Density | 9/sq mi |
| Coordinates | 44.2498°N, 107.6150°W |
| Timezone | America/Denver |
| County | Big Horn County County |
| Nearest Airport | Worland Municipal (WRL) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
| Good Days % | 89.2% |
| Unhealthy Days | 2 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 31.1 / 100 |
| Social Vulnerability | 52.6 / 100 |
| Community Resilience | 7.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively High |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
48 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.
| Aug 22, 2009 | 20 km SSE of Birney, Montana | M4.0 | 135 km | 14 km |
| Nov 3, 2017 | 57 km S of Ten Sleep, Wyoming | M4.0 | 83 km | 17 km |
| Apr 13, 2021 | 51 km S of Ten Sleep, Wyoming | M3.9 | 78 km | 12 km |
| Feb 25, 1993 | 31 km N of Arvada, Wyoming | M3.9 | 145 km | 5 km |
| Feb 13, 2023 | Wyoming | M3.7 | 80 km | 10 km |
| Aug 31, 1992 | 34 km WNW of Kaycee, Wyoming | M3.6 | 66 km | 5 km |
| Jul 4, 2021 | 43 km S of Ten Sleep, Wyoming | M3.6 | 70 km | 17 km |
| Nov 16, 1993 | 17 km SSE of Ten Sleep, Wyoming | M3.5 | 45 km | 5 km |
| Jan 9, 2007 | 7 km ENE of East Thermopolis, Wyoming | M3.5 | 76 km | 5 km |
| Aug 7, 1991 | 31 km NNW of Pavillion, Wyoming | M3.5 | 130 km | 5 km |
| Apr 5, 2002 | 7 km W of South Flat, Wyoming | M3.3 | 51 km | 5 km |
| Sep 3, 2023 | 32 km NW of Kaycee, Wyoming | M3.3 | 66 km | 5 km |
| Mar 10, 1993 | 27 km W of Midwest, Wyoming | M3.2 | 124 km | 5 km |
| Oct 31, 2017 | 56 km S of Ten Sleep, Wyoming | M3.2 | 82 km | 15 km |
| Nov 30, 2012 | 33 km NNE of Powder River, Wyoming | M3.1 | 126 km | 5 km |
| Nov 9, 1999 | 58 km ENE of Shoshoni, Wyoming | M3.1 | 86 km | 5 km |
| Dec 16, 2012 | 40 km W of Owl Creek, Wyoming | M3.1 | 127 km | 5 km |
| Oct 25, 2009 | 34 km S of Buffalo, Wyoming | M3.0 | 80 km | 5 km |
| Jan 6, 2017 | 22 km SW of Owl Creek, Wyoming | M3.0 | 114 km | 13 km |
| Nov 8, 2000 | 40 km ENE of Shoshoni, Wyoming | M3.0 | 91 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
70 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 fatality, 4 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 2, 1985 | EF3 | 70 km | 0.2 mi | 0 |
| Jun 1, 2018 | EF2 | 48 km | 1.0 mi | 0 |
| Jun 1, 2018 | EF2 | 46 km | 1.0 mi | 0 |
| Jun 12, 2017 | EF2 | 97 km | 1.6 mi | 0 |
| Jul 10, 2001 | EF2 | 67 km | 0.5 mi | 0 |
| Jul 4, 1978 | EF2 | 41 km | 5.0 mi | 0 |
| Jul 24, 1967 | EF2 | 46 km | 0.1 mi | 0 |
| Jul 9, 1962 | EF2 | 51 km | 0.5 mi | 0 |
| Jun 12, 1962 | EF2 | 68 km | 0.5 mi | 0 |
| Jun 26, 1959 | EF2 | 28 km | 9.2 mi | 1 |
| Jun 3, 1958 | EF2 | 34 km | 0.2 mi | 0 |
| Jun 19, 2019 | EF1 | 43 km | 4.1 mi | 0 |
| Aug 30, 2010 | EF1 | 32 km | 4.6 mi | 0 |
| Jun 1, 2009 | EF1 | 15 km | 0.4 mi | 0 |
| Jun 26, 2001 | EF1 | 43 km | 0.7 mi | 0 |
| Jun 6, 1997 | EF1 | 50 km | 1.0 mi | 0 |
| Jun 15, 1984 | EF1 | 73 km | 1.0 mi | 0 |
| Jul 24, 1981 | EF1 | 89 km | 0.1 mi | 0 |
| Jun 18, 1978 | EF1 | 82 km | 0.1 mi | 0 |
| Jun 20, 1977 | EF1 | 96 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: HOUSE DRAW (167,966 acres, 2024).
| Year | Name | Acres Burned | Distance |
| 2024 | HOUSE DRAW | 167,966 | 98 km |
| 1996 | EBLACK MTN | 53,211 | 57 km |
| 1996 | BATES | 47,060 | 68 km |
| 2018 | TEREK | 43,872 | 18 km |
| 2012 | CATO | 26,816 | 96 km |
| 2020 | NEIBER | 17,594 | 54 km |
| 1988 | LOST | 13,081 | 48 km |
| 2007 | BONE CREEK | 12,776 | 43 km |
| 2006 | OUTLAW 2 | 12,279 | 87 km |
| 2021 | CRATER RIDGE | 8,147 | 79 km |
| 1996 | WILLOW | 7,723 | 58 km |
| 2001 | THUNDER CH | 7,539 | 88 km |
| 1996 | BUFFALO 2 | 7,173 | 44 km |
| 2018 | DENVER JAKE | 6,973 | 53 km |
| 2003 | LITTLE HORN II | 5,889 | 81 km |
| 2012 | GILEAD | 5,374 | 57 km |
| 1996 | NBROKENBAC | 4,921 | 18 km |
| 2012 | OTTER CREEK-UPPER BEE | 4,786 | 52 km |
| 2007 | LITTLE GOOSE | 4,767 | 59 km |
| 2000 | MUDDYCRK | 4,601 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 0.2 in | Coldest, Driest |
| February | 28°F (-2°C) | 0.2 in | |
| March | 39°F (4°C) | 0.3 in | |
| April | 46°F (8°C) | 0.8 in | |
| May | 56°F (13°C) | 1.4 in | Wettest |
| June | 65°F (18°C) | 1.1 in | |
| July | 73°F (23°C) | 0.7 in | Warmest |
| August | 71°F (22°C) | 0.4 in | |
| September | 61°F (16°C) | 1.1 in | |
| October | 48°F (9°C) | 0.7 in | |
| November | 35°F (2°C) | 0.3 in | |
| December | 26°F (-3°C) | 0.2 in |
Hyattville has a seasonal temperature swing of 47°F / from 26°F in January to 73°F in July. Total annual precipitation is 7.4 inches, with May being the wettest month (1.4") and January the driest (0.2").