Casper, Wyoming Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Casper weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear——90°55°—
- SundayJul 5Overcast——95°59°+5°
- MondayJul 6Overcast——93°64°-2°
- TuesdayJul 7Light Drizzle27%—95°59°+2°
- WednesdayJul 8Rain39%0.15″93°59°-2°
- ThursdayJul 9Overcast18%—91°62°-2°
- FridayJul 10Clear——91°63°0°
AQI 67 (Moderate), driven by Ozone. AQI up 19 in the last 6 hours — air quality is degrading. Ozone at AQI 46 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 46 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 around 1 PM.
- Present
- AQI 46
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 11
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:26 PM
- Moonset
- 11:19 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Casper at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 82601, 82604, 82609
16-Day Forecast — Casper
- Sat90°55°0%
- Sun95°59°1%
- Mon93°64°5%
- Tue95°59°27%
- Wed93°59°39%
- Thu91°62°18%
- Fri91°63°5%
- Sat97°62°1%
- Sun106°68°3%
- Mon104°76°10%
- Tue106°73°18%
- Wed106°73°27%
- Thu105°76°30%
- Fri103°70°32%
- Sat103°72°23%
- Sun93°69°23%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Casper
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Casper
SPC includes Casper in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Casper
- 82609
- 82604
- 82601
- 82602
- 82605