September weather forecastNew Haven, MO
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in New Haven, Missouri, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 80.1°F (26.7°C).Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a hot 87.3°F (30.7°C) in August to a moderately hot 80.1°F (26.7°C). In the month of September, New Haven's average low-temperature falls to a mild 59.2°F (15.1°C).Humidity
The average relative humidity in September is 74%.Rainfall
In New Haven, during September, the rain falls for 10.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. In New Haven, during the entire year, the rain falls for 129.1 days and collects up to 20.59" (523mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:48 pm CDT.
Sunshine
In New Haven, the average sunshine in September is 9.4h.UV index
In New Haven, the average daily maximum UV index in September 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: The maximum daily UV index, 5 in September, converts into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's radiation is especially intense around midday; try to stay in shade during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
New Haven, MO
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in September: 59.2°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 (24.1°F).
Average pressure in September
New Haven, 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
New Haven, MO
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
New Haven, 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
New Haven, MO
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
New Haven, MO
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in September
New Haven, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
New Haven, MO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
New Haven, MO
- Average daylight in September: 12h and 24min
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 24min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in September
New Haven, MO
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
New Haven, 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
New Haven, MO
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
New Haven, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, September, October, November and December (6mi).
The months with the lowest visibility are May and August (5mi).
