Weather Almanac: Bismarck, ND 58503

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 1.55"
September days below freezing
📉 ≈0.3 days
Average September lows ≈45.1°F
USDA Zone
4a
Annual extreme lows -30°F to -25°F
Last Spring Frost (36°F)
🌷 May 31
First Fall Frost (36°F)
🍂 Sep 9
Mon. September 1 Labor Day  

🌅 7:03 a.m.

H: ≈76.7°F

L: ≈51.4°F

🌇 8:21 p.m.

Tue. September 2  

🌅 7:04 a.m.

H: ≈76.3°F

L: ≈51.0°F

🌇 8:19 p.m.

Wed. September 3  

🌅 7:05 a.m.

H: ≈75.9°F

L: ≈50.6°F

🌇 8:17 p.m.

Thu. September 4  

🌅 7:06 a.m.

H: ≈75.6°F

L: ≈50.2°F

🌇 8:15 p.m.

Fri. September 5  

🌅 7:08 a.m.

H: ≈75.1°F

L: ≈49.8°F

🌇 8:13 p.m.

Sat. September 6  

🌅 7:09 a.m.

H: ≈74.7°F

L: ≈49.4°F

🌇 8:11 p.m.

Sun. September 7 🌕

🌅 7:10 a.m.

H: ≈74.3°F

L: ≈48.9°F

🌇 8:09 p.m.

Mon. September 8  

🌅 7:12 a.m.

H: ≈73.9°F

L: ≈48.5°F

🌇 8:07 p.m.

Tue. September 9  

🌅 7:13 a.m.

H: ≈73.5°F

L: ≈48.1°F

🌇 8:05 p.m.

Wed. September 10  

🌅 7:14 a.m.

H: ≈73.1°F

L: ≈47.6°F

🌇 8:04 p.m.

Thu. September 11  

🌅 7:16 a.m.

H: ≈72.7°F

L: ≈47.2°F

🌇 8:02 p.m.

Fri. September 12  

🌅 7:17 a.m.

H: ≈72.2°F

L: ≈46.7°F

🌇 8:00 p.m.

Sat. September 13  

🌅 7:18 a.m.

H: ≈71.8°F

L: ≈46.3°F

🌇 7:57 p.m.

Sun. September 14 Holy Cross 🌗

🌅 7:19 a.m.

H: ≈71.4°F

L: ≈45.8°F

🌇 7:55 p.m.

Mon. September 15  

🌅 7:21 a.m.

H: ≈71.0°F

L: ≈45.4°F

🌇 7:53 p.m.

Tue. September 16  

🌅 7:22 a.m.

H: ≈70.5°F

L: ≈44.9°F

🌇 7:51 p.m.

Wed. September 17  

🌅 7:23 a.m.

H: ≈70.1°F

L: ≈44.4°F

🌇 7:49 p.m.

Thu. September 18  

🌅 7:25 a.m.

H: ≈69.7°F

L: ≈44.0°F

🌇 7:47 p.m.

Fri. September 19  

🌅 7:26 a.m.

H: ≈69.2°F

L: ≈43.5°F

🌇 7:45 p.m.

Sat. September 20  

🌅 7:27 a.m.

H: ≈68.8°F

L: ≈43.1°F

🌇 7:43 p.m.

Sun. September 21 🌑

🌅 7:29 a.m.

H: ≈68.4°F

L: ≈42.6°F

🌇 7:41 p.m.

Mon. September 22 Autumn Equinox  

🌅 7:30 a.m.

H: ≈67.9°F

L: ≈42.2°F

🌇 7:39 p.m.

Tue. September 23  

🌅 7:31 a.m.

H: ≈67.5°F

L: ≈41.7°F

🌇 7:37 p.m.

Wed. September 24  

🌅 7:33 a.m.

H: ≈67.1°F

L: ≈41.3°F

🌇 7:35 p.m.

Thu. September 25  

🌅 7:34 a.m.

H: ≈66.6°F

L: ≈40.8°F

🌇 7:33 p.m.

Fri. September 26  

🌅 7:35 a.m.

H: ≈66.2°F

L: ≈40.4°F

🌇 7:31 p.m.

Sat. September 27  

🌅 7:36 a.m.

H: ≈65.8°F

L: ≈39.9°F

🌇 7:29 p.m.

Sun. September 28  

🌅 7:38 a.m.

H: ≈65.3°F

L: ≈39.5°F

🌇 7:27 p.m.

Mon. September 29 🌓

🌅 7:39 a.m.

H: ≈64.9°F

L: ≈39.1°F

🌇 7:25 p.m.

Tue. September 30  

🌅 7:40 a.m.

H: ≈64.4°F

L: ≈38.6°F

🌇 7:23 p.m.


Temperature climatic data from weather station: BISMARCK 2.4 NNW (USC00320817)

Precipitation climatic data from weather station: BISMARCK 7 N (USC00320827)

Agricultural climatic data from weather station: BISMARCK (USW00024011)