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
September brings a slight decrease in the average high-temperature, shifting from a tropical 86.5°F (30.3°C) in August to a warm 79.7°F (26.5°C). The month of September records an average low-temperature of 59°F (15°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Morrison, in September, it is raining for 12.1 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 146.9 rainfall days, and 29.76" (756mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:36 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Guard yourself - Avoiding sunburn is suggested. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September in Morrison?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Morrison, MO
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in September
Morrison, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Morrison, MO
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity in September
Morrison, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Morrison, MO
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in September
Morrison, MO
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Morrison, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Morrison, MO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Morrison, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Morrison, MO
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Morrison, MO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Morrison, MO
- Average cloud cover in September: 31
The months with the most cloud cover are January and February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in September
Morrison, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Morrison, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location