Weather StoryAlmanac, microseasons, and the day's weather story.

Cheyenne, Wyoming Weather

Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →

Cheyenne weather forecast — hour by hour, 7-day outlook, NOAA radar

Cheyenne, WY
Saturday, July 4 at 7:57 PM
78
°
Clear
Feels like
73°
Humidity
23%
Wind
6 mph
Sunrise
11:32 PM
Sunset
2:35 PM
Cheyenne, WY
Hour by hour · 24h
24-Hour ForecastCheyenne, WY: 24-hour forecast. Temperatures range from 54 to 91 degrees Fahrenheit.
L 54°H 91°
Cheyenne, WY
7-day forecast
  1. Today
    Jul 4
    Overcast
    87°52°
  2. Sunday
    Jul 5
    Mostly Clear
    91°54°+4°
  3. Monday
    Jul 6
    Light Rain
    15%
    0.08″
    91°58°
  4. Tuesday
    Jul 7
    Drizzle
    58%
    0.03″
    92°62°+1°
  5. Wednesday
    Jul 8
    Drizzle
    73%
    86°60°-6°
  6. Thursday
    Jul 9
    Overcast
    36%
    92°59°+6°
  7. Friday
    Jul 10
    Drizzle
    14%
    0.05″
    84°57°-8°
Cheyenne, WY
Anemometer · 24h winds · from true
NESW
From · True
SE
144° · backing 26°
Direction
SE
144°
Sustained
6
mph
Gust
7
mph
Peak 24h
19
avg 6
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 19 @ 3:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 178SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Cheyenne, WY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
819.6
-2.2 mb in 3h · falling rapidly · 24.20 inHg
Now
819.6
mb
3h
-2.2
mb
12h
+3.7
mb
24h
+2.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 813824
805810815820825830-21h-18h-15h-12h-9h-6h-3h-24hNOW824.3813.0820.1
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Cheyenne, WY
Air quality
80
AQI
Moderate
+34 in 6h

AQI 80 (Moderate), driven by Ozone. AQI up 34 in the last 6 hours — air quality is degrading. Ozone at AQI 68 now. With UV 0.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 around 1 PM.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
2.7μg/m³
PM 10Good
5μg/m³
NO₂Good
2μg/m³
OzoneDRIVERUnhealthy SG
118μg/m³
UV IndexLow
0.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 68 now. With UV 0.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 around 1 PM.

Present
AQI 68
UV peak
0.4 at 1 PM
Sky at peak
clear
Projected peak
AQI 16
Cheyenne, WY
Sky cover · visibility · 24h
Cloud cover
18%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
145.1mi
UNLIMITED
185 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
01:57 UTC · Cheyenne, WY · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
01:57 UTC · Cheyenne, WY · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Cheyenne, WY
Satellite · infrared · animated
Cheyenne, WY
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Cheyenne, WY
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:59 AM
Sunrise
11:32 PM
Daylight
15h 03m
Sunset
2:35 PM
Civil dusk
9:09 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Cheyenne, WY
The moon
Waning Gibbous
77% illuminated
Moonrise
11:19 PM
Moonset
11:13 AM
In sign
♓︎ Pisces
Cheyenne, WY
Microseason
Jul 1–5

Monsoon storms drench the south

insect
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Cheyenne at a glance

  • Today vs. normal: 7°F above the seasonal normal for this latitude
  • Last frost: April 23 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP codes: 82001, 82007, 82009

16-Day Forecast — Cheyenne

  1. Sat87°52°3%
  2. Sun91°54°1%
  3. Mon91°58°15%
  4. Tue92°62°58%
  5. Wed86°60°73%
  6. Thu92°59°36%
  7. Fri84°57°14%
  8. Sat89°56°4%
  9. Sun94°61°5%
  10. Mon101°61°10%
  11. Tue99°69°20%
  12. Wed103°72°30%
  13. Thu104°72°29%
  14. Fri99°66°34%
  15. Sat99°65°35%
  16. Sun85°65°32%

Forecast data from Open-Meteo (CC BY 4.0).

Live wind & temperature near Cheyenne

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 — Cheyenne

SPC includes Cheyenne in the general thunderstorm area today — no severe risk, but storms are possible.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWTSTMGeneral Thunderstorms
  • 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 Cheyenne

  • 82009
  • 82001
  • 82007
  • 82002
  • 82003

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.