Weather Almanac: Bellingham, WA 98226

🗓️ Historical norms for September 2026

September avg. precipitation
🌧️ 1.78"
September days below freezing
📉 ≈777.7 days
Average September lows 46°F – 49°F
USDA Zone
8a
Annual extreme lows 10°F to 15°F
Last Spring Frost (36°F)
🌷 May 8
First Fall Frost (36°F)
🍂 Oct 1
Tue. September 1  

🌅 6:26 a.m.

H: 65°F – 76°F

L: 46°F – 55°F

🌇 7:51 p.m.

Wed. September 2  

🌅 6:28 a.m.

H: 64°F – 76°F

L: 46°F – 55°F

🌇 7:49 p.m.

Thu. September 3  

🌅 6:29 a.m.

H: 64°F – 75°F

L: 46°F – 55°F

🌇 7:47 p.m.

Fri. September 4  

🌅 6:31 a.m.

H: 64°F – 75°F

L: 46°F – 55°F

🌇 7:45 p.m.

Sat. September 5  

🌅 6:32 a.m.

H: 64°F – 75°F

L: 46°F – 55°F

🌇 7:43 p.m.

Sun. September 6  

🌅 6:33 a.m.

H: 64°F – 75°F

L: 45°F – 54°F

🌇 7:40 p.m.

Mon. September 7 Labor Day  

🌅 6:35 a.m.

H: 63°F – 75°F

L: 45°F – 54°F

🌇 7:38 p.m.

Tue. September 8  

🌅 6:36 a.m.

H: 63°F – 75°F

L: 45°F – 54°F

🌇 7:36 p.m.

Wed. September 9  

🌅 6:38 a.m.

H: 63°F – 74°F

L: 44°F – 54°F

🌇 7:34 p.m.

Thu. September 10  

🌅 6:39 a.m.

H: 63°F – 74°F

L: 44°F – 54°F

🌇 7:32 p.m.

Fri. September 11  

🌅 6:40 a.m.

H: 62°F – 74°F

L: 44°F – 54°F

🌇 7:30 p.m.

Sat. September 12  

🌅 6:42 a.m.

H: 62°F – 74°F

L: 44°F – 53°F

🌇 7:28 p.m.

Sun. September 13  

🌅 6:43 a.m.

H: 62°F – 74°F

L: 43°F – 53°F

🌇 7:26 p.m.

Mon. September 14 Holy Cross  

🌅 6:45 a.m.

H: 62°F – 73°F

L: 43°F – 53°F

🌇 7:24 p.m.

Tue. September 15  

🌅 6:46 a.m.

H: 62°F – 73°F

L: 43°F – 53°F

🌇 7:21 p.m.

Wed. September 16  

🌅 6:48 a.m.

H: 61°F – 73°F

L: 43°F – 53°F

🌇 7:19 p.m.

Thu. September 17  

🌅 6:49 a.m.

H: 61°F – 73°F

L: 42°F – 52°F

🌇 7:17 p.m.

Fri. September 18  

🌅 6:50 a.m.

H: 61°F – 72°F

L: 42°F – 52°F

🌇 7:15 p.m.

Sat. September 19  

🌅 6:52 a.m.

H: 61°F – 72°F

L: 42°F – 52°F

🌇 7:13 p.m.

Sun. September 20  

🌅 6:53 a.m.

H: 60°F – 72°F

L: 41°F – 52°F

🌇 7:11 p.m.

Mon. September 21  

🌅 6:55 a.m.

H: 60°F – 71°F

L: 41°F – 52°F

🌇 7:09 p.m.

Tue. September 22 Autumn Equinox  

🌅 6:56 a.m.

H: 60°F – 71°F

L: 41°F – 51°F

🌇 7:07 p.m.

Wed. September 23  

🌅 6:58 a.m.

H: 60°F – 71°F

L: 41°F – 51°F

🌇 7:04 p.m.

Thu. September 24  

🌅 6:59 a.m.

H: 59°F – 70°F

L: 40°F – 51°F

🌇 7:02 p.m.

Fri. September 25  

🌅 7:00 a.m.

H: 59°F – 70°F

L: 40°F – 51°F

🌇 7:00 p.m.

Sat. September 26 🌕

🌅 7:02 a.m.

H: 59°F – 70°F

L: 40°F – 51°F

🌇 6:58 p.m.

Sun. September 27  

🌅 7:03 a.m.

H: 58°F – 69°F

L: 39°F – 51°F

🌇 6:56 p.m.

Mon. September 28  

🌅 7:05 a.m.

H: 58°F – 69°F

L: 39°F – 50°F

🌇 6:54 p.m.

Tue. September 29  

🌅 7:06 a.m.

H: 58°F – 69°F

L: 39°F – 50°F

🌇 6:52 p.m.

Wed. September 30  

🌅 7:08 a.m.

H: 58°F – 68°F

L: 39°F – 50°F

🌇 6:50 p.m.


Temperature climatic data from weather station: BELLINGHAM INTL AP (USW00024217)

Precipitation climatic data from weather station: BELLINGHAM INTL AP (USW00024217)

Agricultural climatic data from weather station: BELLINGHAM INTL AP (USW00024217)