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 into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a hot 86.7°F (30.4°C) in August to a warm 80.1°F (26.7°C). Blackwell observes an average nighttime temperature of 58.6°F (14.8°C) during September.Humidity
In September, the average relative humidity in Blackwell, Missouri, is 75%.Rainfall
February, September and November are months with the least rain in Blackwell when the rain falls for 12.2 days and typically aggregates up to 1.73" (44mm) of rain.Snowfall
April through October are months without snowfall.Daylight
In Blackwell, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm CDT.
Sunshine
In Blackwell, Missouri, the average sunshine in September is 9.4h.UV index
In Blackwell, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What is the average September temperature in Blackwell?
What is the average humidity in September in Blackwell?
What is the driest month in Blackwell?
How much does it rain in Blackwell in September?
When it does not snow in Blackwell?
What is the average length of the day in September in Blackwell?
What time are sunrise and sunset in September in Blackwell?
How many hours of sunshine does Blackwell have in September?
What is the UV index intensity in September in Blackwell?
Average temperature in September
Blackwell, MO
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Blackwell, 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
Blackwell, MO
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Blackwell, MO
- Average humidity in September: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Blackwell, MO
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (3.03").
The driest months (with the least rainfall) are February, September and November (1.73").
Average rainfall days in September
Blackwell, MO
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Blackwell, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Blackwell, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Blackwell, 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 36min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Blackwell, MO
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Blackwell, MO
- Average UV index in September: 5
The months with the highest UV index are May, 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
Blackwell, MO
- Average cloud cover in September: 32
The months with the most cloud cover are January, February and March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Blackwell, MO
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Blackwell, Missouri, USA
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