Weather Almanac: Columbia Falls, MT 59912

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 1.38"
September days below freezing
📉 ≈1.8 days
Average September lows ≈40.0°F
USDA Zone
5a
Annual extreme lows -20°F to -15°F
Last Spring Frost (36°F)
🌷 Always
First Fall Frost (36°F)
🍂 Always
Mon. September 1 Labor Day  

🌅 6:54 a.m.

H: ≈76.4°F

L: ≈44.1°F

🌇 8:17 p.m.

Tue. September 2  

🌅 6:56 a.m.

H: ≈76.0°F

L: ≈43.8°F

🌇 8:15 p.m.

Wed. September 3  

🌅 6:57 a.m.

H: ≈75.6°F

L: ≈43.5°F

🌇 8:13 p.m.

Thu. September 4  

🌅 6:58 a.m.

H: ≈75.1°F

L: ≈43.3°F

🌇 8:11 p.m.

Fri. September 5  

🌅 7:00 a.m.

H: ≈74.7°F

L: ≈43.0°F

🌇 8:09 p.m.

Sat. September 6  

🌅 7:01 a.m.

H: ≈74.3°F

L: ≈42.7°F

🌇 8:07 p.m.

Sun. September 7 🌕

🌅 7:03 a.m.

H: ≈73.9°F

L: ≈42.4°F

🌇 8:05 p.m.

Mon. September 8  

🌅 7:04 a.m.

H: ≈73.5°F

L: ≈42.1°F

🌇 8:02 p.m.

Tue. September 9  

🌅 7:05 a.m.

H: ≈73.1°F

L: ≈41.8°F

🌇 8:00 p.m.

Wed. September 10  

🌅 7:07 a.m.

H: ≈72.6°F

L: ≈41.6°F

🌇 7:58 p.m.

Thu. September 11  

🌅 7:08 a.m.

H: ≈72.2°F

L: ≈41.3°F

🌇 7:56 p.m.

Fri. September 12  

🌅 7:09 a.m.

H: ≈71.8°F

L: ≈41.0°F

🌇 7:54 p.m.

Sat. September 13  

🌅 7:11 a.m.

H: ≈71.4°F

L: ≈40.7°F

🌇 7:52 p.m.

Sun. September 14 Holy Cross 🌗

🌅 7:12 a.m.

H: ≈70.9°F

L: ≈40.5°F

🌇 7:50 p.m.

Mon. September 15  

🌅 7:14 a.m.

H: ≈70.5°F

L: ≈40.2°F

🌇 7:48 p.m.

Tue. September 16  

🌅 7:15 a.m.

H: ≈70.1°F

L: ≈39.9°F

🌇 7:46 p.m.

Wed. September 17  

🌅 7:16 a.m.

H: ≈69.7°F

L: ≈39.6°F

🌇 7:44 p.m.

Thu. September 18  

🌅 7:18 a.m.

H: ≈69.3°F

L: ≈39.3°F

🌇 7:42 p.m.

Fri. September 19  

🌅 7:19 a.m.

H: ≈68.8°F

L: ≈39.1°F

🌇 7:39 p.m.

Sat. September 20  

🌅 7:21 a.m.

H: ≈68.4°F

L: ≈38.8°F

🌇 7:37 p.m.

Sun. September 21 🌑

🌅 7:22 a.m.

H: ≈68.0°F

L: ≈38.5°F

🌇 7:35 p.m.

Mon. September 22 Autumn Equinox  

🌅 7:23 a.m.

H: ≈67.6°F

L: ≈38.2°F

🌇 7:33 p.m.

Tue. September 23  

🌅 7:25 a.m.

H: ≈67.1°F

L: ≈37.9°F

🌇 7:31 p.m.

Wed. September 24  

🌅 7:26 a.m.

H: ≈66.7°F

L: ≈37.6°F

🌇 7:29 p.m.

Thu. September 25  

🌅 7:28 a.m.

H: ≈66.3°F

L: ≈37.3°F

🌇 7:27 p.m.

Fri. September 26  

🌅 7:29 a.m.

H: ≈65.9°F

L: ≈37.0°F

🌇 7:25 p.m.

Sat. September 27  

🌅 7:30 a.m.

H: ≈65.4°F

L: ≈36.7°F

🌇 7:23 p.m.

Sun. September 28  

🌅 7:32 a.m.

H: ≈65.0°F

L: ≈36.4°F

🌇 7:21 p.m.

Mon. September 29 🌓

🌅 7:33 a.m.

H: ≈64.6°F

L: ≈36.1°F

🌇 7:18 p.m.

Tue. September 30  

🌅 7:35 a.m.

H: ≈64.1°F

L: ≈35.8°F

🌇 7:16 p.m.


Temperature climatic data from weather station: KALISPELL 9 NNE (USC00244560)

Precipitation climatic data from weather station: KALISPELL 9 NNE (USC00244560)

Agricultural climatic data from weather station: KALISPELL GLACIER AP (USC00244558)