Weather Almanac: Dayton, WY 82836

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 1.78"
September days below freezing
📉 ≈14.8 days
Average September lows 29°F – 35°F
USDA Zone
4b
Annual extreme lows -25°F to -20°F
Last Spring Frost (36°F)
🌷 Jun 1
First Fall Frost (36°F)
🍂 Sep 9
Mon. September 1 Labor Day  

🌅 6:33 a.m.

H: 56°F – 74°F

L: 30°F – 43°F

🌇 7:46 p.m.

Tue. September 2  

🌅 6:34 a.m.

H: 56°F – 73°F

L: 30°F – 43°F

🌇 7:44 p.m.

Wed. September 3  

🌅 6:35 a.m.

H: 55°F – 73°F

L: 29°F – 42°F

🌇 7:42 p.m.

Thu. September 4  

🌅 6:36 a.m.

H: 55°F – 73°F

L: 29°F – 42°F

🌇 7:40 p.m.

Fri. September 5  

🌅 6:37 a.m.

H: 54°F – 72°F

L: 29°F – 42°F

🌇 7:39 p.m.

Sat. September 6  

🌅 6:38 a.m.

H: 54°F – 72°F

L: 28°F – 42°F

🌇 7:37 p.m.

Sun. September 7 🌕

🌅 6:40 a.m.

H: 53°F – 72°F

L: 28°F – 42°F

🌇 7:35 p.m.

Mon. September 8  

🌅 6:41 a.m.

H: 52°F – 71°F

L: 28°F – 41°F

🌇 7:33 p.m.

Tue. September 9  

🌅 6:42 a.m.

H: 52°F – 71°F

L: 27°F – 41°F

🌇 7:31 p.m.

Wed. September 10  

🌅 6:43 a.m.

H: 51°F – 71°F

L: 27°F – 41°F

🌇 7:29 p.m.

Thu. September 11  

🌅 6:44 a.m.

H: 50°F – 70°F

L: 27°F – 41°F

🌇 7:27 p.m.

Fri. September 12  

🌅 6:46 a.m.

H: 50°F – 70°F

L: 26°F – 40°F

🌇 7:25 p.m.

Sat. September 13  

🌅 6:47 a.m.

H: 49°F – 70°F

L: 26°F – 40°F

🌇 7:24 p.m.

Sun. September 14 Holy Cross 🌗

🌅 6:48 a.m.

H: 48°F – 69°F

L: 25°F – 40°F

🌇 7:22 p.m.

Mon. September 15  

🌅 6:49 a.m.

H: 48°F – 69°F

L: 25°F – 39°F

🌇 7:20 p.m.

Tue. September 16  

🌅 6:50 a.m.

H: 47°F – 68°F

L: 25°F – 39°F

🌇 7:18 p.m.

Wed. September 17  

🌅 6:51 a.m.

H: 47°F – 68°F

L: 24°F – 39°F

🌇 7:16 p.m.

Thu. September 18  

🌅 6:53 a.m.

H: 46°F – 68°F

L: 24°F – 39°F

🌇 7:14 p.m.

Fri. September 19  

🌅 6:54 a.m.

H: 45°F – 67°F

L: 23°F – 38°F

🌇 7:12 p.m.

Sat. September 20  

🌅 6:55 a.m.

H: 45°F – 67°F

L: 23°F – 38°F

🌇 7:10 p.m.

Sun. September 21 🌑

🌅 6:56 a.m.

H: 44°F – 67°F

L: 23°F – 38°F

🌇 7:08 p.m.

Mon. September 22 Autumn Equinox  

🌅 6:57 a.m.

H: 44°F – 66°F

L: 22°F – 37°F

🌇 7:06 p.m.

Tue. September 23  

🌅 6:59 a.m.

H: 43°F – 66°F

L: 22°F – 37°F

🌇 7:05 p.m.

Wed. September 24  

🌅 7:00 a.m.

H: 43°F – 65°F

L: 21°F – 37°F

🌇 7:03 p.m.

Thu. September 25  

🌅 7:01 a.m.

H: 42°F – 65°F

L: 21°F – 37°F

🌇 7:01 p.m.

Fri. September 26  

🌅 7:02 a.m.

H: 41°F – 65°F

L: 20°F – 36°F

🌇 6:59 p.m.

Sat. September 27  

🌅 7:03 a.m.

H: 41°F – 64°F

L: 20°F – 36°F

🌇 6:57 p.m.

Sun. September 28  

🌅 7:05 a.m.

H: 41°F – 64°F

L: 19°F – 36°F

🌇 6:55 p.m.

Mon. September 29 🌓

🌅 7:06 a.m.

H: 40°F – 64°F

L: 19°F – 35°F

🌇 6:53 p.m.

Tue. September 30  

🌅 7:07 a.m.

H: 40°F – 63°F

L: 19°F – 35°F

🌇 6:51 p.m.


Temperature climatic data from weather station: BURGESS JUNCTION (USC00481220)

Precipitation climatic data from weather station: BURGESS JUNCTION (USC00481220)

Agricultural climatic data from weather station: GREYBULL (USC00484080)