Weather Almanac: West Haven, CT 06516

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 4.37"
September days below freezing
📉 ≈0.0 days
Average September lows ≈56.1°F
USDA Zone
7a
Annual extreme lows 0°F to 5°F
Last Spring Frost (36°F)
🌷 May 12
First Fall Frost (36°F)
🍂 Oct 1
Mon. September 1 Labor Day  

🌅 6:18 a.m.

H: ≈78.7°F

L: ≈61.2°F

🌇 7:24 p.m.

Tue. September 2  

🌅 6:19 a.m.

H: ≈78.4°F

L: ≈60.9°F

🌇 7:22 p.m.

Wed. September 3  

🌅 6:20 a.m.

H: ≈78.2°F

L: ≈60.6°F

🌇 7:20 p.m.

Thu. September 4  

🌅 6:21 a.m.

H: ≈78.0°F

L: ≈60.2°F

🌇 7:19 p.m.

Fri. September 5  

🌅 6:22 a.m.

H: ≈77.8°F

L: ≈59.9°F

🌇 7:17 p.m.

Sat. September 6  

🌅 6:23 a.m.

H: ≈77.5°F

L: ≈59.6°F

🌇 7:15 p.m.

Sun. September 7 🌕

🌅 6:24 a.m.

H: ≈77.2°F

L: ≈59.2°F

🌇 7:14 p.m.

Mon. September 8  

🌅 6:25 a.m.

H: ≈77.0°F

L: ≈58.9°F

🌇 7:12 p.m.

Tue. September 9  

🌅 6:26 a.m.

H: ≈76.7°F

L: ≈58.5°F

🌇 7:10 p.m.

Wed. September 10  

🌅 6:27 a.m.

H: ≈76.4°F

L: ≈58.2°F

🌇 7:09 p.m.

Thu. September 11  

🌅 6:28 a.m.

H: ≈76.1°F

L: ≈57.8°F

🌇 7:07 p.m.

Fri. September 12  

🌅 6:29 a.m.

H: ≈75.8°F

L: ≈57.4°F

🌇 7:05 p.m.

Sat. September 13  

🌅 6:30 a.m.

H: ≈75.5°F

L: ≈57.1°F

🌇 7:03 p.m.

Sun. September 14 Holy Cross 🌗

🌅 6:31 a.m.

H: ≈75.2°F

L: ≈56.7°F

🌇 7:02 p.m.

Mon. September 15  

🌅 6:32 a.m.

H: ≈74.8°F

L: ≈56.3°F

🌇 7:00 p.m.

Tue. September 16  

🌅 6:33 a.m.

H: ≈74.5°F

L: ≈56.0°F

🌇 6:58 p.m.

Wed. September 17  

🌅 6:34 a.m.

H: ≈74.2°F

L: ≈55.6°F

🌇 6:57 p.m.

Thu. September 18  

🌅 6:35 a.m.

H: ≈73.8°F

L: ≈55.2°F

🌇 6:55 p.m.

Fri. September 19  

🌅 6:36 a.m.

H: ≈73.4°F

L: ≈54.9°F

🌇 6:53 p.m.

Sat. September 20  

🌅 6:37 a.m.

H: ≈73.1°F

L: ≈54.5°F

🌇 6:51 p.m.

Sun. September 21 🌑

🌅 6:38 a.m.

H: ≈72.7°F

L: ≈54.1°F

🌇 6:50 p.m.

Mon. September 22 Autumn Equinox  

🌅 6:39 a.m.

H: ≈72.3°F

L: ≈53.7°F

🌇 6:48 p.m.

Tue. September 23  

🌅 6:40 a.m.

H: ≈71.9°F

L: ≈53.4°F

🌇 6:46 p.m.

Wed. September 24  

🌅 6:41 a.m.

H: ≈71.6°F

L: ≈53.0°F

🌇 6:45 p.m.

Thu. September 25  

🌅 6:42 a.m.

H: ≈71.2°F

L: ≈52.6°F

🌇 6:43 p.m.

Fri. September 26  

🌅 6:43 a.m.

H: ≈70.8°F

L: ≈52.2°F

🌇 6:41 p.m.

Sat. September 27  

🌅 6:44 a.m.

H: ≈70.4°F

L: ≈51.9°F

🌇 6:39 p.m.

Sun. September 28  

🌅 6:45 a.m.

H: ≈70.0°F

L: ≈51.5°F

🌇 6:38 p.m.

Mon. September 29 🌓

🌅 6:46 a.m.

H: ≈69.6°F

L: ≈51.1°F

🌇 6:36 p.m.

Tue. September 30  

🌅 6:47 a.m.

H: ≈69.2°F

L: ≈50.7°F

🌇 6:34 p.m.


Temperature climatic data from weather station: NEW HAVEN TWEED AP (USW00014758)

Precipitation climatic data from weather station: NEW HAVEN TWEED AP (USW00014758)

Agricultural climatic data from weather station: MT CARMEL (USC00065077)