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Weather in Greeley for September 2025

Your guide to Greeley weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Greeley at the beginning of September is 31 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 29.3 °F by the end of September.

    • Rain 🌧️

  • Greeley experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 108.1 mm.

    • More

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/11°
Temperatures
Average wind speed
24 km/h
Avg max wind
Average humidity
39 %
Avg humidity

Greeley Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
32°
2
Sunny
33°
3
Partly cloudy
34°
4
Moderate rain at times
31°
5
Patchy rain possible
25°
6
Sunny
30°
7
Partly cloudy
32°
8
Sunny
32°
9
Patchy rain possible
33°
10
Partly cloudy
33°
11
Patchy rain possible
30°
12
Partly cloudy
33°
13
Partly cloudy
29°
14
Sunny
31°
15
Patchy light drizzle
31°
16
Partly cloudy
31°
17
Light rain shower
29°
18
Mist
27°
19
Sunny
28°
20
Cloudy
29°
21
Overcast
19°
22
Heavy rain
10°
23
Mist
26°
24
Partly cloudy
25°
25
Sunny
29°
26
Sunny
33°
27
Overcast
31°
28
Sunny
32°
29
Sunny
32°
30
Cloudy
23°
Select a date

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Access Greeley weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
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Temperatures trend during September in Greeley

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
 32° /14° 0 mm 8
Sept. 2 Sunny
Sunny
 33° /15° 0 mm 8
Sept. 3 Partly cloudy
Partly cloudy
 34° /14° 0 mm 8
Sept. 4 Moderate rain at times
Moderate rain at times
 31° /14° 6.7 mm 7
Sept. 5 Patchy rain possible
Patchy rain possible
 25° /13° 0.1 mm 6
Sept. 6 Sunny
Sunny
 30° /13° 0 mm 8
Sept. 7 Partly cloudy
Partly cloudy
 32° /14° 0 mm 8
Sept. 8 Sunny
Sunny
 32° /14° 0 mm 8
Sept. 9 Patchy rain possible
Patchy rain possible
 33° /15° 0.6 mm 7
Sept. 10 Partly cloudy
Partly cloudy
 33° /17° 0 mm 8
Sept. 11 Patchy rain possible
Patchy rain possible
 30° /15° 2.6 mm 7
Sept. 12 Partly cloudy
Partly cloudy
 33° /13° 0 mm 8
Sept. 13 Partly cloudy
Partly cloudy
 29° /12° 0 mm 7
Sept. 14 Sunny
Sunny
 31° /12° 0 mm 8
Sept. 15 Patchy light drizzle
Patchy light drizzle
 31° /12° 0.8 mm 7
Sept. 16 Partly cloudy
Partly cloudy
 31° /14° 0.4 mm 8
Sept. 17 Light rain shower
Light rain shower
 29° /10° 4.2 mm 6
Sept. 18 Mist
Mist
 27° /4° 0 mm 6
Sept. 19 Sunny
Sunny
 28° /5° 0 mm 7
Sept. 20 Cloudy
Cloudy
 29° /8° 0 mm 6
Sept. 21 Overcast
Overcast
 19° /8° 0 mm 4
Sept. 22 Heavy rain
Heavy rain
 10° /5° 92.7 mm 3
Sept. 23 Mist
Mist
 26° /3° 0 mm 6
Sept. 24 Partly cloudy
Partly cloudy
 25° /11° 0 mm 7
Sept. 25 Sunny
Sunny
 29° /9° 0 mm 7
Sept. 26 Sunny
Sunny
 33° /10° 0 mm 8
Sept. 27 Overcast
Overcast
 31° /16° 0 mm 7
Sept. 28 Sunny
Sunny
 32° /12° 0 mm 8
Sept. 29 Sunny
Sunny
 32° /11° 0 mm 8
Sept. 30 Cloudy
Cloudy
 23° /9° 0 mm 5
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Important Notice
Our weather forecast for Greeley 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 Greeley forecast closer to your planned date for the most up-to-date weather information.

Greeley in September - FAQ

What are the expected maximum and minimum temperatures in Greeley during September?
Enjoy moderate daytime temperatures of up to 29° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Greeley during September?
Significant rainfall exceeding 108.1 mm is expected in Greeley during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Greeley during September?
The average wind speed in Greeley during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Greeley

Explore the daily rainfall trends and prepare for Greeleys September weather 💧

UV exposure in Greeley during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Greeley, located at latitude 40.423 and longitude -104.709. Stay updated with localized weather information tailored for Greeley.

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