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 onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 78.4°F (25.8°C) in August to a pleasant 73°F (22.8°C). Throughout September, an average nighttime temperature of 55°F (12.8°C) is experienced.Humidity
The average relative humidity in September is 80%.Rainfall
In September, in Nappanee, the rain falls for 9.1 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. Throughout the year, in Nappanee, there are 110.8 rainfall days, and 9.41" (239mm) of precipitation is accumulated.Snowfall
In Nappanee, Indiana, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 7:11 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:26 pm EDT.
Sunshine
In Nappanee, the average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Nappanee in September?
What is the average humidity in September in Nappanee?
How much does it rain in Nappanee in September?
When it does not snow in Nappanee?
Does it snow in Nappanee in September?
What is the average length of the day in September in Nappanee?
What time are sunrise and sunset in September in Nappanee?
How long on average sun shines in September in Nappanee?
How high is the UV index in September in Nappanee?
Average temperature in September
Nappanee, IN
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Nappanee, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Nappanee, IN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Nappanee, IN
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Nappanee, IN
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Nappanee, IN
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in September
Nappanee, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Nappanee, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nappanee, IN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Nappanee, IN
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in September
Nappanee, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Nappanee, IN
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Nappanee, IN
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
Nappanee, Indiana, USA
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