Weather Almanac: Cheyenne, WY 82009

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 1.47"
September days below freezing
📉 ≈0.5 days
Average September lows ≈44.4°F
USDA Zone
5b
Annual extreme lows -15°F to -10°F
Last Spring Frost (36°F)
🌷 Jun 1
First Fall Frost (36°F)
🍂 Sep 17
Mon. September 1 Labor Day  

🌅 6:26 a.m.

H: ≈76.9°F

L: ≈50.0°F

🌇 7:31 p.m.

Tue. September 2  

🌅 6:27 a.m.

H: ≈76.6°F

L: ≈49.7°F

🌇 7:30 p.m.

Wed. September 3  

🌅 6:28 a.m.

H: ≈76.3°F

L: ≈49.3°F

🌇 7:28 p.m.

Thu. September 4  

🌅 6:29 a.m.

H: ≈76.0°F

L: ≈49.0°F

🌇 7:26 p.m.

Fri. September 5  

🌅 6:30 a.m.

H: ≈75.7°F

L: ≈48.6°F

🌇 7:25 p.m.

Sat. September 6  

🌅 6:31 a.m.

H: ≈75.3°F

L: ≈48.3°F

🌇 7:23 p.m.

Sun. September 7 🌕

🌅 6:32 a.m.

H: ≈75.0°F

L: ≈47.9°F

🌇 7:21 p.m.

Mon. September 8  

🌅 6:33 a.m.

H: ≈74.7°F

L: ≈47.5°F

🌇 7:19 p.m.

Tue. September 9  

🌅 6:34 a.m.

H: ≈74.3°F

L: ≈47.1°F

🌇 7:18 p.m.

Wed. September 10  

🌅 6:35 a.m.

H: ≈74.0°F

L: ≈46.7°F

🌇 7:16 p.m.

Thu. September 11  

🌅 6:36 a.m.

H: ≈73.6°F

L: ≈46.3°F

🌇 7:14 p.m.

Fri. September 12  

🌅 6:37 a.m.

H: ≈73.2°F

L: ≈45.9°F

🌇 7:13 p.m.

Sat. September 13  

🌅 6:38 a.m.

H: ≈72.8°F

L: ≈45.5°F

🌇 7:11 p.m.

Sun. September 14 Holy Cross 🌗

🌅 6:39 a.m.

H: ≈72.4°F

L: ≈45.1°F

🌇 7:09 p.m.

Mon. September 15  

🌅 6:40 a.m.

H: ≈72.0°F

L: ≈44.7°F

🌇 7:07 p.m.

Tue. September 16  

🌅 6:41 a.m.

H: ≈71.6°F

L: ≈44.3°F

🌇 7:06 p.m.

Wed. September 17  

🌅 6:42 a.m.

H: ≈71.2°F

L: ≈43.8°F

🌇 7:04 p.m.

Thu. September 18  

🌅 6:43 a.m.

H: ≈70.8°F

L: ≈43.4°F

🌇 7:02 p.m.

Fri. September 19  

🌅 6:44 a.m.

H: ≈70.4°F

L: ≈43.0°F

🌇 7:01 p.m.

Sat. September 20  

🌅 6:45 a.m.

H: ≈69.9°F

L: ≈42.6°F

🌇 6:59 p.m.

Sun. September 21 🌑

🌅 6:46 a.m.

H: ≈69.5°F

L: ≈42.2°F

🌇 6:57 p.m.

Mon. September 22 Autumn Equinox  

🌅 6:47 a.m.

H: ≈69.1°F

L: ≈41.7°F

🌇 6:55 p.m.

Tue. September 23  

🌅 6:48 a.m.

H: ≈68.6°F

L: ≈41.3°F

🌇 6:54 p.m.

Wed. September 24  

🌅 6:49 a.m.

H: ≈68.2°F

L: ≈40.9°F

🌇 6:52 p.m.

Thu. September 25  

🌅 6:50 a.m.

H: ≈67.8°F

L: ≈40.5°F

🌇 6:50 p.m.

Fri. September 26  

🌅 6:51 a.m.

H: ≈67.3°F

L: ≈40.1°F

🌇 6:49 p.m.

Sat. September 27  

🌅 6:52 a.m.

H: ≈66.9°F

L: ≈39.7°F

🌇 6:47 p.m.

Sun. September 28  

🌅 6:53 a.m.

H: ≈66.4°F

L: ≈39.3°F

🌇 6:45 p.m.

Mon. September 29 🌓

🌅 6:54 a.m.

H: ≈66.0°F

L: ≈38.9°F

🌇 6:43 p.m.

Tue. September 30  

🌅 6:55 a.m.

H: ≈65.6°F

L: ≈38.5°F

🌇 6:42 p.m.


Temperature climatic data from weather station: CHEYENNE WFO (USC00481676)

Precipitation climatic data from weather station: CHEYENNE WFO (USC00481676)

Agricultural climatic data from weather station: CHEYENNE (USW00024018)