Walnut Grove
September
Weather in Walnut Grove for September 2025
Your guide to Walnut Grove weather in September - trends and predictions
In general, the average temperature in Walnut Grove at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15 °C by the end of September.
The climate of Walnut Grove in September is notably wet, with an average of 11 rainy days, and a total of 143.5 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
19
Dry days
11
Rainy days
0
Snow days
19°/11°
Temperatures
8 km/h
Avg max wind
77 %
Avg humidity
Walnut Grove in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 26° | 3  20° | 4  22° | 5  25° | 6 25° | 7 26° |
| 8  24° | 9 23° | 10 21° | 11  19° | 12 18° | 13 17° | 14 20° |
| 15 22° | 16 22° | 17 17° | 18 17° | 19 13° | 20 17° | 21 20° |
| 22  18° | 23 17° | 24 20° | 25  17° | 26 12° | 27 13° | 28 13° |
| 29 14° | 30 16° |
You can click on date
Access Walnut Grove weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Walnut Grove
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 28° /13° | 0 mm | 7 | |
| 2 Sept. | Partly cloudy | 26° /14° | 0 mm | 7 | |
| 3 Sept. | Light rain shower | 20° /13° | 0.6 mm | 5 | |
| 4 Sept. | Fog | 22° /12° | 0.2 mm | 6 | |
| 5 Sept. | Overcast | 25° /13° | 0 mm | 7 | |
| 6 Sept. | Partly cloudy | 25° /12° | 0 mm | 7 | |
| 7 Sept. | Partly cloudy | 26° /13° | 0 mm | 7 | |
| 8 Sept. | Cloudy | 24° /12° | 0 mm | 6 | |
| 9 Sept. | Cloudy | 23° /12° | 0.1 mm | 5 | |
| 10 Sept. | Overcast | 21° /12° | 0 mm | 5 | |
| 11 Sept. | Light drizzle | 19° /11° | 0.2 mm | 5 | |
| 12 Sept. | Mist | 18° /9° | 0 mm | 4 | |
| 13 Sept. | Fog | 17° /12° | 1.1 mm | 4 | |
| 14 Sept. | Partly cloudy | 20° /10° | 3.9 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /10° | 0.2 mm | 6 | |
| 16 Sept. | Overcast | 22° /9° | 0 mm | 6 | |
| 17 Sept. | Overcast | 17° /10° | 1.5 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /10° | 0.4 mm | 4 | |
| 19 Sept. | Mist | 13° /9° | 3.3 mm | 3 | |
| 20 Sept. | Mist | 17° /9° | 0.3 mm | 4 | |
| 21 Sept. | Partly cloudy | 20° /7° | 0 mm | 5 | |
| 22 Sept. | Sunny | 18° /10° | 8.9 mm | 5 | |
| 23 Sept. | Light rain shower | 17° /11° | 5.3 mm | 4 | |
| 24 Sept. | Light drizzle | 20° /10° | 5.4 mm | 5 | |
| 25 Sept. | Moderate or heavy rain with thunder | 17° /11° | 55 mm | 4 | |
| 26 Sept. | Moderate or heavy rain with thunder | 12° /9° | 33 mm | 3 | |
| 27 Sept. | Light drizzle | 13° /10° | 13.3 mm | 3 | |
| 28 Sept. | Moderate or heavy rain with thunder | 13° /8° | 10.8 mm | 4 | |
| 29 Sept. | Partly cloudy | 14° /6° | 0 mm | 4 | |
| 30 Sept. | Cloudy | 16° /4° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Walnut Grove 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 Walnut Grove forecast closer to your planned date for the most up-to-date weather information.
Walnut Grove in September - FAQ
What are the expected maximum and minimum temperatures in Walnut Grove during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Walnut Grove during September?
Significant rainfall exceeding 143.5 mm is expected in Walnut Grove during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Walnut Grove during September?
The average wind speed in Walnut Grove during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Walnut Grove
Explore the daily rainfall trends and prepare for Walnut Groves September weather 💧
UV exposure in Walnut Grove during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
You are here
Where is Walnut Grove?Get accurate weather forecasts for Walnut Grove, located at latitude 49.165 and longitude -122.64. Stay updated with localized weather information tailored for Walnut Grove.
Found a mistake?
We appreciate your attention to details. Tell us here.