September weather forecastIreland, IN
September
Weather in September
September, the first month of the autumn in Ireland, is also a moderately hot month, with an average temperature ranging between min 60.1°F (15.6°C) and max 79.3°F (26.3°C).Temperature
A mild shift in the average high-temperature occurs in September, reducing from 84.7°F (29.3°C) in August to a still warm 79.3°F (26.3°C). The average temperature in Ireland, Indiana, during September nights dips to a mild 60.1°F (15.6°C).Humidity
In Ireland, the average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall in Ireland. Rain falls for 12.9 days and accumulates 1.89" (48mm) of precipitation.Snowfall
Months with snowfall in Ireland are January through April, September through December. September is the first month it typically snows in Ireland. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Ireland, Indiana, there are 25.4 snowfall days, and 7.8" (198mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 7:18 am and sunset at 8:17 pm. On the last day of September, in Ireland, Indiana, sunrise is at 7:43 am and sunset at 7:31 pm EDT.
Sunshine
In September, the average sunshine in Ireland, Indiana, is 8.4h.UV index
In Ireland, 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 exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ireland, IN
- Average high temperature in September: 79.3°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 60.1°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°F).
Average pressure in September
Ireland, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Ireland, IN
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
Ireland, IN
- Average humidity in September: 74%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Ireland, IN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is April (4.84").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Ireland, IN
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in September
Ireland, IN
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Ireland, IN
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ireland, IN
- 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: 8h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in September
Ireland, IN
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in September
Ireland, IN
- Average UV index in September: 5
The months with the highest UV index are 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
Ireland, IN
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Ireland, IN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, May, July and August (5mi).
