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 transition from August to September sees an average high-temperature of an agreeable 72.7°F (22.6°C), indicating a minor variance from the prior month. September nights experience a consistent temperature drop to a fresh 53.8°F (12.1°C).Humidity
In September, the average relative humidity in Wahpeton is 74%.Rainfall
In Wahpeton, in September, during 12 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Wahpeton, during the entire year, the rain falls for 121.8 days and collects up to 23.27" (591mm) of precipitation.Snowfall
In Wahpeton, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:45 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In Wahpeton, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 4 transforms into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Wahpeton?
What is the average humidity in September in Wahpeton?
How many days does it rain in September in Wahpeton?
When it does not snow in Wahpeton?
Does it snow in Wahpeton in September?
What is the average length of the day in September in Wahpeton?
When is the sunrise / sunset in September in Wahpeton?
How many hours of sunshine does Wahpeton have in September?
How high is the UV index in September in Wahpeton?
Average temperature in September
Wahpeton, IA
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in September
Wahpeton, IA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Wahpeton, IA
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in September
Wahpeton, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Wahpeton, IA
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Wahpeton, IA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Wahpeton, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Wahpeton, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wahpeton, IA
- 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Wahpeton, IA
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Wahpeton, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in September
Wahpeton, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Wahpeton, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Wahpeton, Iowa, USA
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