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
Haley experiences a temperature shift at the start of September, with average high-temperatures adjusting from a warm 82°F (27.8°C) in August to an agreeable 72.5°F (22.5°C). During the nights in September, an average low-temperature of 53.2°F (11.8°C) is observed.Humidity
In September, the average relative humidity is 50%.Rainfall
In September, in Haley, the rain falls for 8.6 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. In Haley, North Dakota, during the entire year, the rain falls for 99.3 days and collects up to 14.41" (366mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Haley. Throughout September, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 63.8 snowfall days, and 23.62" (600mm) of snow is accumulated.Daylight
In September, the average length of the day in Haley is 12h and 31min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:33 pm MDT.
Sunshine
In September, the average sunshine is 10h.UV index
The average daily maximum UV index in September in Haley is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take precautions - Protection against sunburn is recommended. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Haley in September?
What is the average humidity in September in Haley?
How many days does it rain in September in Haley?
When does it start snowing in Haley?
How many hours of daylight does Haley have in September?
When are sunrise and sunset in September in Haley?
How long on average sun shines in September in Haley?
What is the UV index intensity in September in Haley?
Average temperature in September
Haley, ND
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Haley, ND
- Average pressure in September: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Haley, ND
- Average wind speed in September: 10.7mph
The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.8mph).
Average humidity in September
Haley, ND
- Average humidity in September: 50%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Haley, ND
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (2.32").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in September
Haley, ND
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Haley, ND
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Haley, ND
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (12.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Haley, ND
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Haley, ND
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is April (12.2 days).
Average UV index in September
Haley, ND
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Haley, ND
- Average cloud cover in September: 22
The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Haley, ND
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Haley, North Dakota, USA
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