Weather Almanac: Fairbanks, AK 99790

🗓️ Historical norms for September 2026

September avg. precipitation
🌧️ 1.76"
September days below freezing
📉 ≈8.7 days
Average September lows 32°F – 41°F
USDA Zone
3b
Annual extreme lows -35°F to -30°F
Last Spring Frost (36°F)
🌷 Always
First Fall Frost (36°F)
🍂 Always
F: Forecast
H: Normal High Temp
L: Normal Low Temp
Tue. September 1  

🌅 6:28 a.m.

H: 49°F – 62°F

L: 36°F – 47°F

🌇 9:15 p.m.

Wed. September 2  

🌅 6:31 a.m.

H: 48°F – 61°F

L: 36°F – 47°F

🌇 9:11 p.m.

Thu. September 3  

🌅 6:34 a.m.

H: 48°F – 61°F

L: 36°F – 46°F

🌇 9:07 p.m.

Fri. September 4  

🌅 6:37 a.m.

H: 48°F – 61°F

L: 35°F – 46°F

🌇 9:04 p.m.

Sat. September 5  

🌅 6:40 a.m.

H: 47°F – 60°F

L: 35°F – 46°F

🌇 9:00 p.m.

Sun. September 6  

🌅 6:43 a.m.

H: 47°F – 60°F

L: 34°F – 45°F

🌇 8:56 p.m.

Mon. September 7 Labor Day  

🌅 6:47 a.m.

H: 46°F – 59°F

L: 34°F – 45°F

🌇 8:52 p.m.

Tue. September 8  

🌅 6:50 a.m.

H: 46°F – 59°F

L: 34°F – 45°F

🌇 8:49 p.m.

Wed. September 9  

🌅 6:53 a.m.

H: 45°F – 58°F

L: 33°F – 45°F

🌇 8:45 p.m.

Thu. September 10  

🌅 6:56 a.m.

H: 45°F – 58°F

L: 33°F – 44°F

🌇 8:41 p.m.

Fri. September 11  

🌅 6:59 a.m.

H: 44°F – 57°F

L: 32°F – 44°F

🌇 8:37 p.m.

Sat. September 12  

🌅 7:02 a.m.

H: 44°F – 57°F

L: 32°F – 44°F

🌇 8:34 p.m.

Sun. September 13  

🌅 7:05 a.m.

H: 43°F – 57°F

L: 31°F – 43°F

🌇 8:30 p.m.

Mon. September 14 Holy Cross  

🌅 7:08 a.m.

H: 42°F – 56°F

L: 31°F – 43°F

🌇 8:26 p.m.

Tue. September 15  

🌅 7:11 a.m.

H: 42°F – 56°F

L: 30°F – 43°F

🌇 8:22 p.m.

Wed. September 16  

🌅 7:14 a.m.

H: 41°F – 55°F

L: 30°F – 43°F

🌇 8:18 p.m.

Thu. September 17  

🌅 7:17 a.m.

H: 41°F – 55°F

L: 29°F – 42°F

🌇 8:15 p.m.

Fri. September 18  

🌅 7:20 a.m.

H: 40°F – 54°F

L: 29°F – 42°F

🌇 8:11 p.m.

Sat. September 19  

🌅 7:24 a.m.

H: 39°F – 54°F

L: 28°F – 42°F

🌇 8:07 p.m.

Sun. September 20  

🌅 7:27 a.m.

H: 38°F – 53°F

L: 28°F – 41°F

🌇 8:03 p.m.

Mon. September 21  

🌅 7:30 a.m.

H: 38°F – 53°F

L: 27°F – 41°F

🌇 8:00 p.m.

Tue. September 22 Autumn Equinox  

🌅 7:33 a.m.

H: 37°F – 52°F

L: 27°F – 41°F

🌇 7:56 p.m.

Wed. September 23  

🌅 7:36 a.m.

H: 36°F – 52°F

L: 26°F – 40°F

🌇 7:52 p.m.

Thu. September 24  

🌅 7:39 a.m.

H: 36°F – 51°F

L: 26°F – 40°F

🌇 7:48 p.m.

Fri. September 25  

🌅 7:42 a.m.

H: 35°F – 51°F

L: 25°F – 39°F

🌇 7:45 p.m.

Sat. September 26 🌕

🌅 7:45 a.m.

H: 34°F – 50°F

L: 24°F – 39°F

🌇 7:41 p.m.

Sun. September 27  

🌅 7:48 a.m.

H: 34°F – 50°F

L: 24°F – 38°F

🌇 7:37 p.m.

Mon. September 28  

🌅 7:51 a.m.

H: 33°F – 49°F

L: 23°F – 38°F

🌇 7:33 p.m.

Tue. September 29  

🌅 7:54 a.m.

H: 32°F – 48°F

L: 23°F – 38°F

🌇 7:30 p.m.

Wed. September 30  

🌅 7:57 a.m.

H: 32°F – 48°F

L: 22°F – 37°F

🌇 7:26 p.m.


Temperature climatic data from weather station: KEYSTONE RIDGE (USC00504621)

Precipitation climatic data from weather station: KEYSTONE RIDGE (USC00504621)

Agricultural climatic data from weather station: ESTER 5NE (USC00502871)