September weather forecastLafayette, OH
September
Weather in September
The first month of the autumn, September, is still a warm month in Lafayette, Ohio, with an average temperature varying between 55.6°F (13.1°C) and 73.6°F (23.1°C).Temperature
Lafayette's September showcases an average high-temperature of a still warm 73.6°F (23.1°C), hardly distinct from August's 78.6°F (25.9°C). During the month of September, the nighttime temperature falls to an average of 55.6°F (13.1°C).Humidity
In September, the average relative humidity in Lafayette is 79%.Rainfall
In Lafayette, in September, it is raining for 11.5 days, with typically 1.54" (39mm) of accumulated precipitation. In Lafayette, during the entire year, the rain falls for 148.3 days and collects up to 21.3" (541mm) of precipitation.Snowfall
In Lafayette, Ohio, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 27min.On the first day of September, sunrise is at 7:03 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:19 pm EDT.
Sunshine
In Lafayette, the average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lafayette, OH
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Lafayette, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Lafayette, OH
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Lafayette, OH
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in September
Lafayette, OH
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is May (2.72").
The driest months (with the least rainfall) are February and December (1.14").
Average rainfall days in September
Lafayette, OH
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (6.6 days).
Average snowfall in September
Lafayette, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lafayette, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lafayette, OH
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Lafayette, OH
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).
Average UV index in September
Lafayette, OH
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Lafayette, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Lafayette, OH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
