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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's 83.3°F (28.5°C) to a still moderately hot 77.4°F (25.2°C). Helmsburg encounters a steady low-temperature average of 58.3°F (14.6°C) throughout the month of September.Humidity
In September, the average relative humidity is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 12.3 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Helmsburg, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 7:14 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:28 pm EDT.
Sunshine
In Helmsburg, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Helmsburg is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Exercise care. People with light skin might get 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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Helmsburg in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Helmsburg have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Helmsburg have in September?
What is the UV index reading in September?
Average temperature in September
Helmsburg, IN
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Helmsburg, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Helmsburg, IN
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Helmsburg, IN
- Average humidity in September: 77%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Helmsburg, IN
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Helmsburg, IN
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (19.6 days).
The months with the least rainy days are January and February (8 days).
Average snowfall in September
Helmsburg, IN
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Helmsburg, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Helmsburg, 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 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Helmsburg, IN
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (8.6 days).
Average UV index in September
Helmsburg, IN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Helmsburg, IN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Helmsburg, IN
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Helmsburg, Indiana, USA
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