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
Grand Pass experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from 84°F (28.9°C) in August to a still warm 78.1°F (25.6°C). Grand Pass records a consistent low-temperature of 58.6°F (14.8°C) during September nights.Humidity
In September, the average relative humidity is 75%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 2.6" (66mm) of precipitation is accumulated. In Grand Pass, during the entire year, the rain falls for 136.7 days and collects up to 27.87" (708mm) of precipitation.Snowfall
In Grand Pass, snow does not fall in April, June through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Grand Pass, Missouri, sunrise is at 6:43 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:57 pm CDT.
Sunshine
In Grand Pass, Missouri, the average sunshine in September is 9.3h.UV index
In Grand Pass, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grand Pass in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September in Grand Pass?
How many hours of sunshine does Grand Pass have in September?
What is the UV index intensity in September?
Average temperature in September
Grand Pass, MO
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in September
Grand Pass, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Grand Pass, MO
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Grand Pass, MO
- Average humidity in September: 75%
The months with the highest relative humidity are May, June, July and August (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Grand Pass, MO
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Grand Pass, MO
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Grand Pass, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.11").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in September
Grand Pass, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grand Pass, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Grand Pass, MO
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is December (21.4 days).
The months with the least sunshine days are May and June (12.1 days).
Average UV index in September
Grand Pass, MO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Grand Pass, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Grand Pass, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Grand Pass, Missouri, USA
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