Flag for USA

Past Weather in Yellowstone National Park, Wyoming, USA — September 2018

16 °F

Mostly cloudy.

Feels Like: 5 °F
Forecast: 20 / 7 °F
Wind: 8 mph from Southwest

Location: West Yellowstone Airport

Current Time: Dec 15, 2019 at 3:18:08 am

Latest Report: Dec 15, 2019 at 2:30 am

Visibility: 10 mi

Pressure: 29.79 "Hg

Humidity: 100%

Dew Point: 16 °F

Location of Yellowstone National ParkLocation

September 2018 Weather in Yellowstone National Park — Graph


High & Low Weather Summary for September 2018

High81 °F (Sep 6, 3:10 pm)100% (Sep 2, 4:55 am)30.40 "Hg (Sep 2, 4:55 am)
Low14 °F (Sep 26, 7:15 am)7% (Sep 17, 5:55 pm)29.89 "Hg (Sep 15, 7:10 pm)
Average48 °F49%30.12 "Hg
* Reported Sep 1 12:15 am — Sep 30 11:50 pm, Yellowstone National Park. Weather by CustomWeather, © 2019

Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records

Yellowstone National Park Weather History for September 1, 2018

Scroll right to see more
Time TempWeatherWind HumidityBarometerVisibility
12:15 am
Sat, Sep 1
50 °FPassing clouds.No wind58%30.09 "Hg10 mi
12:35 am48 °FPassing clouds.5 mph58%30.09 "Hg10 mi
12:55 am46 °FPassing clouds.No wind62%30.10 "Hg10 mi
1:15 am45 °FClear.3 mph66%30.10 "Hg10 mi
1:30 am43 °FClear.5 mph71%30.10 "Hg10 mi
1:55 am43 °FClear.5 mph71%30.10 "Hg10 mi
2:15 am45 °FClear.9 mph66%30.10 "Hg10 mi
2:35 am46 °FClear.6 mph62%30.09 "Hg10 mi
2:55 am46 °FClear.No wind62%30.09 "Hg10 mi
3:15 am46 °FClear.5 mph62%30.09 "Hg10 mi
3:35 am43 °FClear.No wind71%30.09 "Hg10 mi
3:55 am41 °FClear.No wind76%30.09 "Hg10 mi
4:15 am39 °FClear.No wind81%30.09 "Hg10 mi
4:30 am37 °FClear.No wind81%30.09 "Hg10 mi
4:50 am36 °FClear.No wind87%30.10 "Hg10 mi
5:15 am34 °FClear.No wind93%30.10 "Hg10 mi
5:35 am32 °FClear.No wind93%30.10 "Hg10 mi
5:55 am32 °FClear.No wind93%30.10 "Hg10 mi
6:15 am32 °FClear.No wind93%30.10 "Hg10 mi
6:35 am32 °FClear.No wind93%30.10 "Hg10 mi
6:50 am32 °FSunny.No wind93%30.10 "Hg10 mi
7:35 am34 °FSunny.No wind93%30.11 "Hg10 mi
7:55 am37 °FSunny.No wind87%30.11 "Hg10 mi
8:15 am41 °FSunny.No wind76%30.11 "Hg10 mi
8:35 am43 °FSunny.No wind71%30.12 "Hg10 mi
8:50 am46 °FSunny.No wind66%30.12 "Hg10 mi
9:10 am52 °FSunny.No wind54%30.12 "Hg10 mi
9:35 am54 °FSunny.No wind47%30.12 "Hg10 mi
9:55 am55 °FSunny.12 mph41%30.11 "Hg10 mi
10:15 am57 °FSunny.16 mph39%30.11 "Hg10 mi
10:35 am57 °FSunny.15 mph39%30.11 "Hg10 mi
10:50 am59 °FSunny.15 mph36%30.11 "Hg10 mi
11:10 am59 °FSunny.14 mph39%30.11 "Hg10 mi
11:35 am61 °FSunny.18 mph34%30.11 "Hg10 mi
11:55 am61 °FSunny.17 mph34%30.11 "Hg10 mi
12:15 pm63 °FSunny.15 mph32%30.10 "Hg10 mi
12:35 pm63 °FSunny.14 mph32%30.09 "Hg10 mi
12:50 pm64 °FSunny.13 mph28%30.10 "Hg10 mi
1:10 pm64 °FSunny.14 mph30%30.09 "Hg10 mi
1:35 pm66 °FSunny.17 mph28%30.09 "Hg10 mi
1:55 pm66 °FSunny.13 mph28%30.09 "Hg10 mi
2:15 pm66 °FSunny.15 mph28%30.09 "Hg10 mi
2:35 pm66 °FSunny.15 mph28%30.08 "Hg10 mi
3:15 pm66 °FSunny.16 mph26%30.07 "Hg10 mi
3:35 pm68 °FSunny.16 mph24%30.07 "Hg10 mi
3:55 pm68 °FSunny.15 mph24%30.07 "Hg10 mi
4:15 pm68 °FSunny.14 mph26%30.07 "Hg10 mi
4:30 pm68 °FSunny.16 mph26%30.06 "Hg10 mi
4:50 pm68 °FSunny.17 mph26%30.06 "Hg10 mi
5:15 pm68 °FSunny.20 mph26%30.05 "Hg10 mi
5:35 pm68 °FSunny.15 mph26%30.06 "Hg10 mi
5:55 pm68 °FSunny.16 mph26%30.05 "Hg10 mi
6:15 pm66 °FPassing clouds.13 mph28%30.05 "Hg10 mi
6:35 pm66 °FPassing clouds.17 mph28%30.05 "Hg10 mi
6:55 pm66 °FScattered clouds.15 mph28%30.06 "Hg10 mi
7:10 pm64 °FPassing clouds.13 mph30%30.06 "Hg10 mi
7:35 pm63 °FSunny.12 mph32%30.06 "Hg10 mi
7:55 pm61 °FScattered clouds.6 mph34%30.07 "Hg10 mi
8:15 pm59 °FPassing clouds.No wind39%30.08 "Hg10 mi
8:30 pm57 °FPassing clouds.5 mph41%30.08 "Hg10 mi
8:50 pm55 °FPassing clouds.No wind44%30.09 "Hg10 mi
9:15 pm55 °FPassing clouds.8 mph41%30.11 "Hg10 mi
9:35 pm55 °FPassing clouds.5 mph41%30.11 "Hg10 mi
9:55 pm54 °FPassing clouds.No wind47%30.12 "Hg10 mi
10:15 pm52 °FClear.5 mph50%30.12 "Hg10 mi
10:35 pm46 °FClear.5 mph62%30.12 "Hg10 mi
10:50 pm48 °FClear.No wind58%30.12 "Hg10 mi
11:10 pm45 °FClear.No wind66%30.13 "Hg10 mi
11:35 pm43 °FClear.No wind71%30.13 "Hg10 mi
11:55 pm41 °FClear.No wind70%30.13 "Hg10 mi
Weather by CustomWeather, © 2019

See weather overview