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 marks the average high-temperature at a still moderately hot 75.6°F (24.2°C), differing minimally from August's 80.2°F (26.8°C). The average temperature drops to a moderate 57.6°F (14.2°C) during the night in the month of September.Humidity
In Greenfield, the average relative humidity in September is 78%.Rainfall
In Greenfield, Indiana, in September, it is raining for 14.5 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, in Greenfield, there are 170 rainfall days, and 32.13" (816mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Greenfield is 12h and 26min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:13 pm. On the last day of September, in Greenfield, sunrise is at 7:39 am and sunset at 7:26 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Greenfield, the average daily maximum UV index in September 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: In September, the maximum UV index of 4 suggests this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Greenfield in September?
What is the average humidity in September in Greenfield?
How many days does it rain in September in Greenfield?
When it does not snow in Greenfield?
Does it snow in Greenfield in September?
What is the average length of the day in September in Greenfield?
What time are sunrise and sunset in September in Greenfield?
How long on average sun shines in September in Greenfield?
What is the UV index intensity in September in Greenfield?
Average temperature in September
Greenfield, IN
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in September: 57.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Greenfield, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Greenfield, IN
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Greenfield, IN
- Average humidity in September: 78%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Greenfield, IN
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in September
Greenfield, IN
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Greenfield, IN
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Greenfield, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenfield, IN
- 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 24min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Greenfield, IN
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Greenfield, IN
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Greenfield, IN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Greenfield, IN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Greenfield, Indiana, USA
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