September weather forecastJordan, MT
September
Weather in September
September, the first month of the autumn in Jordan, is still a pleasant month, with an average temperature fluctuating between 71.2°F (21.8°C) and 54.9°F (12.7°C).Temperature
September brings a drop in Jordan's average high-temperature, falling from a moderately hot 82.6°F (28.1°C) in August to an agreeable 71.2°F (21.8°C). In Jordan, the expected average low-temperature for September is a cool 54.9°F (12.7°C).Humidity
The average relative humidity in September is 44%.Rainfall
In September, the rain falls for 8.7 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. Throughout the year, there are 104.8 rainfall days, and 13.03" (331mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Jordan, during the entire year, snow falls for 58.4 days and aggregates up to 21.1" (536mm) of snow.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September, sunrise is at 6:27 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:48 pm MDT.
Sunshine
In Jordan, the average sunshine in September is 10.1h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. 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
Average temperature in September
Jordan, MT
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in September
Jordan, MT
- Average pressure in September: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Jordan, MT
- Average wind speed in September: 10.5mph
The windiest month (with the highest average wind speed) is April (12mph).
The calmest month (with the lowest average wind speed) is February (9.9mph).
Average humidity in September
Jordan, MT
- Average humidity in September: 44%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Jordan, MT
- Average rainfall in September: 1.1"
The wettest months (with the highest rainfall) are May and June (1.89").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in September
Jordan, MT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Jordan, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is December (4.45").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Jordan, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (12.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Jordan, MT
- Average daylight in September: 12h and 30min
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: 10h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in September
Jordan, MT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Jordan, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Jordan, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in September
Jordan, MT
- 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).
