easeweather.com
Natrona County (Casper)
Akron (OH)Albuquerque (NM)Alexandria (VA)Anaheim (CA)Anchorage (AK)Arlington (VA)Atlanta (GA)Atlantic City (NJ)Austin (TX)Baltimore (MD)Baton Rouge (LA)Birmingham (AL)Boston (MA)Brooklyn (NY)Buffalo (NY)Cape Coral (FL)Casper (WY)Charlotte (NC)Chattanooga (TN)Chicago (IL)Cincinnati (OH)Cleveland (OH)Colorado Springs (CO)Columbus (OH)Corpus Christi (TX)Dallas (TX)Dayton (OH)Denver (CO)Des Moines (IA)Detroit (MI)El Paso (TX)Fairbanks (AK)Fayetteville (NC)Fort Lauderdale (FL)Fort Wayne (IN)Fort Worth (TX)Gatlinburg (TN)Grand Rapids (MI)Harrisburg (PA)Honolulu (HI)Houston (TX)Huntsville (AL)Indianapolis (IN)Jackson (MS)Jacksonville (FL)Juneau (AK)Kansas City (MO)Ketchikan (AK)Key West (FL)Knoxville (TN)Las Vegas (NV)Lexington (KY)Lincoln (NE)Little Rock (AR)Los Angeles (CA)Louisville (KY)Madison (WI)Manhattan (NY)Memphis (TN)Miami (FL)Milwaukee (WI)Minneapolis (MN)Mobile (AL)Montgomery (AL)Nashville (TN)New Orleans (LA)New York City (NY)Newark (NJ)Oklahoma City (OK)Omaha (NE)Orlando (FL)Philadelphia (PA)Phoenix (AZ)Pittsburgh (PA)Portland (OR)Richmond (VA)Riverside (CA)Sacramento (CA)Salt Lake City (UT)San Antonio (TX)San Diego (CA)San Francisco (CA)San Jose (CA)Savannah (GA)Seattle (WA)Sitka (AK)Skagway (AK)Springfield (MO)St. Louis (MO)St. Petersburg (FL)Tallahassee (FL)Tampa (FL)Toledo (OH)Traverse City (MI)Tulsa (OK)Tyler (TX)Vancouver (WA)Virginia Beach (VA)WashingtonWichita (KS)Winston-Salem (NC) More Locations
United States weather

Weather in Natrona County, Wyoming for September 2025

Your guide to Natrona County weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Natrona County has been nearly identical to the historical average, with a temperature of 26.5 °F (showing only a slight deviation of 0.1 °F).

  • Expect cooler weather in the next days in Natrona County with the forecast suggesting a temperature of 24.9 °F, lower than the historical average.

  • In general, the average temperature in Natrona County at the beginning of September is 25.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 26.1 °F by the end of September.

    • Rain 🌧️

  • With an average of 2 rainy days, Natrona County experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
28
Dry days
Average rainy days
2
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/10°
Temperatures
Average wind speed
25 km/h
Avg max wind
Average humidity
37 %
Avg humidity

Natrona County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
27°
2
Sunny
28°
3
Sunny
26°
4
Sunny
27°
5
Overcast
19°
6
Sunny
22°
7
Thundery outbreaks possible
27°
8
Partly cloudy
27°
9
Cloudy
29°
10
Sunny
30°
11
Patchy rain possible
29°
12
Sunny
26°
13
Sunny
22°
14
Partly cloudy
26°
15
Sunny
28°
16
Sunny
22°
17
Sunny
23°
18
Sunny
25°
19
Sunny
24°
20
Sunny
23°
21
Patchy rain possible
26°
22
Patchy rain possible
21°
23
Sunny
24°
24
Sunny
27°
25
Sunny
24°
26
Sunny
28°
27
Sunny
27°
28
Partly cloudy
30°
29
Sunny
31°
30
Sunny
16°

Temperatures trend during September in Natrona County

See the weather trend as well as the moving average line

September weather in Natrona County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
 27° /10° 0 mm 7
Sept. 2 Sunny
Sunny
 28° /10° 0 mm 7
Sept. 3 Sunny
Sunny
 26° /11° 0 mm 7
Sept. 4 Sunny
Sunny
 27° /11° 0 mm 7
Sept. 5 Overcast
Overcast
 19° /8° 0 mm 4
Sept. 6 Sunny
Sunny
 22° /4° 0 mm 6
Sept. 7 Thundery outbreaks possible
Thundery outbreaks possible
 27° /8° 0 mm 6
Sept. 8 Partly cloudy
Partly cloudy
 27° /11° 0 mm 7
Sept. 9 Cloudy
Cloudy
 29° /11° 0 mm 7
Sept. 10 Sunny
Sunny
 30° /12° 0 mm 8
Sept. 11 Patchy rain possible
Patchy rain possible
 29° /12° 0.1 mm 7
Sept. 12 Sunny
Sunny
 26° /11° 0 mm 7
Sept. 13 Sunny
Sunny
 22° /8° 0 mm 6
Sept. 14 Partly cloudy
Partly cloudy
 26° /10° 0 mm 1.5
Sept. 15 Sunny
Sunny
 28° /10° 0 mm 1.5
Sept. 16 Sunny
Sunny
 22° /10° 0 mm 1.2
Sept. 17 Sunny
Sunny
 23° /9° 0.1 mm 1.4
Sept. 18 Sunny
Sunny
 25° /11° 0 mm 0
Sept. 19 Sunny
Sunny
 24° /9° 0 mm 5
Sept. 20 Sunny
Sunny
 23° /13° 0 mm 5
Sept. 21 Patchy rain possible
Patchy rain possible
 26° /12° 1.7 mm 4
Sept. 22 Patchy rain possible
Patchy rain possible
 21° /14° 0.3 mm 4
Sept. 23 Sunny
Sunny
 24° /11° 0 mm 5
Sept. 24 Sunny
Sunny
 27° /11° 0 mm 5
Sept. 25 Sunny
Sunny
 24° /11° 0 mm 5
Sept. 26 Sunny
Sunny
 28° /10° 0 mm 5
Sept. 27 Sunny
Sunny
 27° /11° 0 mm 5
Sept. 28 Partly cloudy
Partly cloudy
 30° /10° 0 mm 8
Sept. 29 Sunny
Sunny
 31° /12° 0 mm 8
Sept. 30 Sunny
Sunny
 16° /2° 0 mm 5
Next
Important Notice
Our weather forecast for Natrona 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 Natrona County forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Natrona County in September - FAQ

What are the expected maximum and minimum temperatures in Natrona County during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Natrona County during September?
Expect minimal rainfall in Natrona County during September, with a total of 11.2 mm over approximately 2 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Natrona County during September?
The average wind speed in Natrona County during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Natrona County

Explore the daily rainfall trends and prepare for Natrona Countys September weather 💧

UV exposure in Natrona County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Natrona County
Select a location for an accurate weather forecast
Casper
More Locations

Quick links

More Natrona County weather pages
You are here
Location coordinates Where is Natrona County?

Get accurate weather forecasts for Natrona County, located at latitude 42.867 and longitude -106.313. Stay updated with localized weather information tailored for Natrona County.

Found a mistake?
We appreciate your attention to details. Tell us here.