Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's onset brings a negligible change in high-temperatures, falling from a moderately hot 77.2°F (25.1°C) in August to an agreeable 68.5°F (20.3°C). Morrisey, in September, witnesses an average low-temperature of 48°F (8.9°C).Humidity
The months with the lowest humidity in Morrisey are August and September, with an average relative humidity of 53%.Rainfall
In Morrisey, in September, during 10 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. In Morrisey, during the entire year, the rain falls for 123.2 days and collects up to 19.37" (492mm) of precipitation.Snowfall
Months with snowfall in Morrisey are January through June, September through December. September is the first month it typically snows in Morrisey. Throughout September, in the average 0.8 snowfall days, it receives 0.94" (24mm) of snow. In Morrisey, during the entire year, snow falls for 80.3 days and aggregates up to 41.73" (1060mm) of snow.Daylight
In September, the average length of the day in Morrisey is 12h and 29min.On the first day of September in Morrisey, sunrise is at 6:22 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:39 pm MDT.
Sunshine
The average sunshine in September is 10.4h.UV index
In Morrisey, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Morrisey?
What is the least humid month in Morrisey?
What is the average humidity in September in Morrisey?
How many days does it rain in September in Morrisey?
When does it start to snow in Morrisey?
What is the average length of the day in September in Morrisey?
When are sunrise and sunset in September in Morrisey?
How long on average sun shines in September in Morrisey?
What is the UV index intensity in September in Morrisey?
Average temperature in September
Morrisey, WY
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in September: 48°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).
Average pressure in September
Morrisey, WY
- Average pressure in September: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Morrisey, WY
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in September
Morrisey, WY
- Average humidity in September: 53%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (53%).
Average rainfall in September
Morrisey, WY
- Average rainfall in September: 1.26"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in September
Morrisey, WY
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Morrisey, WY
- Average snowfall in September: 0.94"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Morrisey, WY
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Morrisey, WY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Morrisey, WY
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in September
Morrisey, WY
- Average UV index in September: 4
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
Morrisey, WY
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Morrisey, WY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Morrisey, Wyoming, USA
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