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
A mild drop in Helmer's average high-temperature is observed in September, transitioning from a warm 78.1°F (25.6°C) in August to a pleasant 72.5°F (22.5°C). Throughout September, the temperature in Helmer, Indiana, tends to fall to a consistent average low of 54.5°F (12.5°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In Helmer, in September, it is raining for 13.5 days, with typically 1.85" (47mm) of accumulated precipitation. In Helmer, during the entire year, the rain falls for 158 days and collects up to 28.62" (727mm) of precipitation.Snowfall
June through September are months without snowfall in Helmer.Daylight
In Helmer, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:13 pm. On the last day of September, in Helmer, sunrise is at 7:37 am and sunset at 7:23 pm EDT.
Sunshine
The average sunshine in September in Helmer, Indiana, is 7.9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Helmer?
What is the average humidity in September in Helmer?
How much does it rain in Helmer in September?
When it does not snow in Helmer?
Does it snow in Helmer in September?
What is the average length of the day in September in Helmer?
When is the sunrise / sunset in September in Helmer?
How long on average sun shines in September in Helmer?
How high is the UV index in September in Helmer?
Average temperature in September
Helmer, IN
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Helmer, IN
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Helmer, IN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Helmer, IN
- Average humidity in September: 80%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Helmer, IN
- Average rainfall in September: 1.85"
The wettest months (with the highest rainfall) are April and May (3.66").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in September
Helmer, IN
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (7.2 days).
Average snowfall in September
Helmer, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Helmer, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Helmer, 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: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Helmer, IN
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are September, October and November (14.7 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in September
Helmer, IN
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Helmer, IN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Helmer, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Helmer, Indiana, USA
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