Daylight through the yearLongest day (Jun 21): 15 h 22 min5:26 am – 8:48 pmShortest day (Dec 21): 9 h 0 min7:33 am – 4:33 pm
Sun todaySunrise –Sunset –
ClimateWarmest month July: highs 89°F, lows 53°FColdest month December: highs 35°F, lows 15°F12 in of rain a year, on about 36 dayswettest month May72 in of snow a year, on about 46 days38 days above 90°F, 183 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Casper Natrona Co Ap station, 13 mi away
Parks and public landsSouth Pass City / Edness K Wilkinsstate park · 16.7 mi · 355 acresRed Buttesstate park · 17.5 miSource: USGS Protected Areas Database (PAD-US)
Earthquakes13 of magnitude 3 or more within 50 miles since 19701 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 4.2 on 19 Oct 199615 mi away, near Antelope Hills, WyomingMost recent: magnitude 3.0 on 12 Feb 202617 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowNatrona County, WY, compared with all US countiesHigher-risk hazardsWinter weather Very HighSource: FEMA National Risk Index (county level)
Air quality86% of days had good air in 2025315 of 365 days measured50 moderate daysMedian index 42, worst day 76main pollutant: ozoneSource: US EPA Air Quality Index, Natrona County monitors, WY
Drinking waterCity of Casperserves 59,000 people from surface water purchasedNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation5,529 ft1,685 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalBanner Wyoming Medical Center15.4 miSource: USGS National Structures Dataset
Getting aroundAirportCasper-Natrona County International Airport CPR13 miInterstateI-252.8 miUS highwayUS 872.8 miCoachCasperExpress Arrow15 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 82602 ZIP area.
