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 arrival of September corresponds with a temperature reduction, down from August's moderately hot 81.1°F (27.3°C) to a pleasant 70.7°F (21.5°C). Riverdale Junction experiences a mean low-temperature of 51.3°F (10.7°C) during September.Humidity
In September, the average relative humidity in Riverdale Junction, North Dakota, is 56%.Rainfall
In Riverdale Junction, in September, it is raining for 9 days, with typically 2.05" (52mm) of accumulated precipitation. In Riverdale Junction, during the entire year, the rain falls for 95.9 days and collects up to 14.65" (372mm) of precipitation.Snowfall
In Riverdale Junction, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 33min.On the first day of September in Riverdale Junction, sunrise is at 7:04 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:25 pm CDT.
Sunshine
The average sunshine in September in Riverdale Junction is 8.6h.UV index
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 unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Exercise prevention - Warding off sunburn is urged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the temperature in September in Riverdale Junction?
What is the average humidity in September in Riverdale Junction?
How many days does it rain in September in Riverdale Junction?
When it does not snow in Riverdale Junction?
Does it snow in Riverdale Junction in September?
How many hours of daylight does Riverdale Junction have in September?
What time are sunrise and sunset in September in Riverdale Junction?
How many hours of sunshine does Riverdale Junction have in September?
What is the UV index intensity in September in Riverdale Junction?
Average temperature in September
Riverdale Junction, ND
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
Riverdale Junction, 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
Riverdale Junction, ND
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is October (11mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Riverdale Junction, ND
- Average humidity in September: 56%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Riverdale Junction, ND
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in September
Riverdale Junction, ND
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Riverdale Junction, ND
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Riverdale Junction, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Riverdale Junction, 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 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in September
Riverdale Junction, ND
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is March (13.9 days).
Average UV index in September
Riverdale Junction, ND
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Riverdale Junction, ND
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in September
Riverdale Junction, 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).
Riverdale Junction, North Dakota, USA
Weather forecast for your location
2. Allow the app to use your location
