Concord (NH)
September
Weather in Concord, New Hampshire for September 2026
Your guide to Concord weather in September - trends and predictions
So far, September 2026 in Concord is slightly warmer than the historical average by 0.6 °F.
The forecast for the next days in Concord predicts a temperature of 18.6 °F, which is cooler than the historical average.
In general, the average temperature in Concord at the beginning of September is 23.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.9 °F by the end of September.
Concord experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 302 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
22°/11°
Temperatures
12 km/h
Avg max wind
73 %
Avg humidity
Concord Weather September
Move between months or click on a day
Temperatures trend during September in Concord
See the weather trend as well as the moving average line
September weather in Concord day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 21° /13° | 89.8 mm | 4 | |
| Sept. 2 |  Fog | 22° /14° | 0.1 mm | 3 | |
| Sept. 3 | Fog | 25° /13° | 75.4 mm | 4 | |
| Sept. 4 | Mist | 26° /12° | 0 mm | 6 | |
| Sept. 5 |  Moderate rain | 24° /14° | 12.1 mm | 5 | |
| Sept. 6 |  Moderate rain at times | 25° /15° | 5.5 mm | 3 | |
| Sept. 7 | Moderate rain | 21° /9° | 26.4 mm | 4 | |
| Sept. 8 | Mist | 24° /10° | 0 mm | 6 | |
| Sept. 9 |  Sunny | 23° /9° | 3.6 mm | 4 | |
| Sept. 10 | Mist | 25° /13° | 9.7 mm | 5 | |
| Sept. 11 | Mist | 24° /9° | 0 mm | 6 | |
| Sept. 12 | Sunny | 22° /8° | 0 mm | 6 | |
| Sept. 13 | Overcast | 20° /12° | 6.9 mm | 2 | |
| Sept. 14 | Fog | 23° /10° | 0 mm | 6 | |
| Sept. 15 | Sunny | 21° /7° | 0 mm | 5.8 | |
| Sept. 16 | Overcast | 27° /10° | 0 mm | 5.9 | |
| Sept. 17 | Fog | 24° /15° | 1.4 mm | 4.2 | |
| Sept. 18 | Overcast | 21° /9° | 0 mm | 5 | |
| Sept. 19 |  Cloudy | 19° /5° | 0 mm | 5.6 | |
| Sept. 20 | Mist | 12° /7° | 0.4 mm | 3 | |
| Sept. 21 |  Patchy rain possible | 13° /11° | 0.7 mm | 3 | |
| Sept. 22 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 23 |  Light drizzle | 10° /8° | 13.1 mm | 3 | |
| Sept. 24 | Mist | 15° /8° | 0 mm | 3 | |
| Sept. 25 | Patchy rain possible | 20° /13° | 10.4 mm | 4 | |
| Sept. 26 | Light rain shower | 21° /19° | 62.8 mm | 5 | |
| Sept. 27 | Mist | 21° /13° | 1.5 mm | 5 | |
| Sept. 28 | Light rain shower | 14° /11° | 3 mm | 3 | |
| Sept. 29 | Sunny | 26° /13° | 0 mm | 4 | |
| Sept. 30 | Overcast | 22° /13° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Concord in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Concord forecast closer to your planned date for the most up-to-date weather information.
Change Month
Concord in September - FAQ
What are the expected maximum and minimum temperatures in Concord during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Concord during September?
Significant rainfall exceeding 302 mm is expected in Concord during September, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Concord during September?
The average wind speed in Concord during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Concord
Explore the daily rainfall trends and prepare for Concords September weather 💧
Typically, Concord has 6 rainy days in September with a total of 302 mm of rainfall.
UV exposure in Concord during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Concord weather pages
You are here
Where is Concord?Get accurate weather forecasts for Concord, located at latitude 43.208 and longitude -71.538. Stay updated with localized weather information tailored for Concord.
Found a mistake?
We appreciate your attention to details. Tell us here.