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
The beginning of September marks a decrease in the average high-temperature, transitioning from a warm 81.9°F (27.7°C) in August to an agreeable 71.6°F (22°C). The nights of September in Halliday anticipate an average low-temperature of 51.8°F (11°C).Humidity
The average relative humidity in September in Halliday is 55%.Rainfall
In Halliday, in September, it is raining for 9.1 days, with typically 1.93" (49mm) of accumulated precipitation. In Halliday, during the entire year, the rain falls for 100.8 days and collects up to 14.88" (378mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Halliday, the average length of the day in September is 12h and 33min.On the first day of September in Halliday, sunrise is at 6:09 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:30 pm MDT.
Sunshine
In Halliday, the average sunshine in September is 8.6h.UV index
In Halliday, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Halliday?
What is the average humidity in September in Halliday?
How many days does it rain in September in Halliday?
When it does not snow in Halliday?
Does it snow in Halliday in September?
How many hours of daylight does Halliday have in September?
What time are sunrise and sunset in September in Halliday?
How long on average sun shines in September in Halliday?
What is the UV index reading in September in Halliday?
Average temperature in September
Halliday, ND
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (21.2°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in September
Halliday, ND
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Halliday, ND
- Average wind speed in September: 9.8mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Halliday, ND
- Average humidity in September: 55%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (53%).
Average rainfall in September
Halliday, ND
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is June (2.56").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in September
Halliday, ND
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is June (15.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Halliday, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Halliday, ND
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Halliday, ND
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in September
Halliday, ND
- Average sunshine days in September: 20 days
The month with the most sunshine days is September (20 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
Halliday, ND
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Halliday, ND
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in September
Halliday, ND
- 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, February, March and December (5mi).
Halliday, North Dakota, USA
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