Twin Falls County (Twin Falls)
September
Weather in Twin Falls County, Idaho for September 2027
Your guide to Twin Falls County weather in September - trends and predictions
With an average of 3 rainy days, Twin Falls County experiences minimal rainfall in September.
Is September a good time to visit Twin Falls County? check out the best time to travel to Twin Falls County page.
✨ Is September a good time to visit Twin Falls County? – Ask the AI Weatherman
Rain 🌧️
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27
Dry days
3
Rainy days
0
Snow days
27°/11°
Temperatures
23 km/h
Avg max wind
40 %
Avg humidity
Twin Falls County Weather September
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Temperatures trend during September in Twin Falls County
See the weather trend as well as the moving average line
September weather in Twin Falls County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 33° /12° | 4.5 mm | 6 | |
| Sept. 2 |  Overcast | 31° /14° | 0 mm | 6 | |
| Sept. 3 | Overcast | 31° /14° | 0 mm | 7.6 | |
| Sept. 4 |  Sunny | 29° /12° | 0 mm | 7.5 | |
| Sept. 5 | Sunny | 30° /11° | 0 mm | 7.4 | |
| Sept. 6 | Overcast | 28° /12° | 0 mm | 7.3 | |
| Sept. 7 |  Cloudy | 28° /11° | 0 mm | 7.2 | |
| Sept. 8 |  Partly cloudy | 29° /9° | 0 mm | 7 | |
| Sept. 9 | Overcast | 27° /12° | 0 mm | 6 | |
| Sept. 10 | Overcast | 29° /13° | 0 mm | 5 | |
| Sept. 11 | Cloudy | 26° /14° | 0.1 mm | 6.8 | |
| Sept. 12 |  Thundery outbreaks possible | 27° /9° | 0 mm | 6 | |
| Sept. 13 | Sunny | 24° /11° | 0 mm | 6.7 | |
| Sept. 14 | Thundery outbreaks possible | 24° /8° | 0 mm | 6.6 | |
| Sept. 15 | Partly cloudy | 25° /8° | 0 mm | 6 | |
| Sept. 16 | Sunny | 28° /8° | 0 mm | 6 | |
| Sept. 17 | Sunny | 29° /13° | 0.2 mm | 5 | |
| Sept. 18 | Sunny | 25° /10° | 0.4 mm | 6 | |
| Sept. 19 | Overcast | 25° /10° | 0.9 mm | 4 | |
| Sept. 20 |  Patchy rain possible | 27° /12° | 1.9 mm | 6 | |
| Sept. 21 | Light rain shower | 28° /13° | 2 mm | 5 | |
| Sept. 22 | Patchy rain possible | 23° /12° | 2.2 mm | 3 | |
| Sept. 23 | Sunny | 27° /7° | 0 mm | 5 | |
| Sept. 24 | Sunny | 30° /9° | 0 mm | 5 | |
| Sept. 25 | Sunny | 30° /10° | 0 mm | 5 | |
| Sept. 26 | Sunny | 22° /10° | 0 mm | 4 | |
| Sept. 27 | Sunny | 26° /7° | 0 mm | 3 | |
| Sept. 28 | Sunny | 25° /10° | 0.2 mm | 4 | |
| Sept. 29 | Overcast | 25° /11° | 0 mm | 5 | |
| Sept. 30 |  Moderate rain | 24° /11° | 16 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Twin Falls County 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 Twin Falls County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Twin Falls County in September - FAQ
What are the expected maximum and minimum temperatures in Twin Falls County during September?
Enjoy moderate daytime temperatures of up to 27° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Twin Falls County during September?
In September, Twin Falls County can expect light to moderate rainfall, totaling 28.5 mm across approximately 3 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Twin Falls County during September?
The average wind speed in Twin Falls County during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Twin Falls County
Explore the daily rainfall trends and prepare for Twin Falls Countys September weather 💧
Typically, Twin Falls County has 3 rainy days in September with a total of 28.5 mm of rainfall.
UV exposure in Twin Falls County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Twin Falls County
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