September weather forecast
Daniel Junction, WY

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Weather in September

The first month of the autumn, September, is still a refreshing month in Daniel Junction, Wyoming, with an average temperature ranging between max 66.4°F (19.1°C) and min 44.1°F (6.7°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from a moderately hot 75°F (23.9°C) in August to a refreshing 66.4°F (19.1°C). Despite the hot September days, Daniel Junction's nights see an average temperature plunge to a frosty 44.1°F (6.7°C).

Humidity

In Daniel Junction, the average relative humidity in September is 44%.

Rainfall

In Daniel Junction, in September, it is raining for 8.8 days, with typically 0.83" (21mm) of accumulated precipitation. In Daniel Junction, during the entire year, the rain falls for 109.9 days and collects up to 10.59" (269mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows in Daniel Junction. Throughout September, in the average 0.7 snowfall days, it receives 0.59" (15mm) of snow. In Daniel Junction, during the entire year, snow falls for 89 days and aggregates up to 43.43" (1103mm) of snow.

Daylight

In Daniel Junction, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:45 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:02 pm MDT.

Sunshine

The average sunshine in September is 10.7h.

UV index

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 3 in September transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

In Daniel Junction, 66.4°F (19.1°C) is the average high-temperature and 44.1°F (6.7°C) is the average low-temperature during September.

What is the average humidity in September?

In Daniel Junction, the average relative humidity in September is 44%.

How many days does it rain in September?

In Daniel Junction, Wyoming, in September, during 8.8 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 0.59" (15mm) of snow.

How many hours of daylight does Daniel Junction have in September?

The average day length in September is 12h and 29min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:45 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:02 pm MDT.

How many hours of sunshine does Daniel Junction have in September?

In September, the average sunshine duration is 10.7h.

What is the UV index reading in September?

In Daniel Junction, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Daniel Junction, WY

Average temperature in September - Daniel Junction, WY
  • Average high temperature in September: 66.4°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (23.7°F).

  • Average low temperature in September: 44.1°F

The month with the highest average low temperature is July (52°F).
The coldest month (with the lowest average low temperature) is December (5°F).

Average pressure in September
Daniel Junction, WY

Average pressure in September - Daniel Junction, WY
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Daniel Junction, WY

Average wind speed in September - Daniel Junction, WY
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).

Average humidity in September
Daniel Junction, WY

Average humidity in September - Daniel Junction, WY
  • Average humidity in September: 44%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).

Average rainfall in September
Daniel Junction, WY

Average rainfall in September - Daniel Junction, WY
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are July and August (0.63").

Average rainfall days in September
Daniel Junction, WY

Average rainfall days in September - Daniel Junction, WY
  • Average rainfall days in September: 8.8 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (6.9 days).

Average snowfall in September
Daniel Junction, WY

Average snowfall in September - Daniel Junction, WY
  • Average snowfall in September: 0.59"

The month with the highest snowfall is April (7.36").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Daniel Junction, WY

Average snowfall days in September - Daniel Junction, WY
  • Average snowfall days in September: 0.7 days

The months with the highest number of snowfall days are February and March (15.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Daniel Junction, WY

Average daylight in September / Average sunshine in September - Daniel Junction, WY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).

Average sunshine days in September
Daniel Junction, WY

Average sunshine days in September - Daniel Junction, WY
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in September
Daniel Junction, WY

Average UV index in September - Daniel Junction, WY
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in September
Daniel Junction, WY

Average cloud cover in September - Daniel Junction, WY
  • Average cloud cover in September: 14

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in September
Daniel Junction, WY

Average visibility in September - Daniel Junction, WY
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Daniel Junction, Wyoming, USA

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