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
September ushers in a minute temperature change, with average high-temperatures reducing from August's 80.6°F (27°C) to a still warm 75°F (23.9°C). Holly Springs usually reports an average low-temperature of 55.6°F (13.1°C) during the month of September.Humidity
The average relative humidity in September in Holly Springs, Iowa, is 72%.Rainfall
In Holly Springs, Iowa, during September, the rain falls for 10.6 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 105.4 rainfall days, and 15.83" (402mm) of precipitation is accumulated.Snowfall
In Holly Springs, snow does not fall in May through September.Daylight
The average length of the day in September in Holly Springs is 12h and 28min.On the first day of September, sunrise is at 6:50 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:06 pm CDT.
Sunshine
In September, the average sunshine in Holly Springs is 8.9h.UV index
In Holly Springs, Iowa, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What are September temperatures in Holly Springs?
What is the average humidity in September in Holly Springs?
How much does it rain in Holly Springs in September?
When it does not snow in Holly Springs?
Does it snow in Holly Springs in September?
How many hours of daylight does Holly Springs have in September?
When are sunrise and sunset in September in Holly Springs?
How many hours of sunshine does Holly Springs have in September?
How high is the UV index in September in Holly Springs?
Average temperature in September
Holly Springs, IA
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 55.6°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 (13.3°F).
Average pressure in September
Holly Springs, IA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Holly Springs, IA
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Holly Springs, IA
- Average humidity in September: 72%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Holly Springs, IA
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Holly Springs, IA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in September
Holly Springs, IA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Holly Springs, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 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
Holly Springs, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Holly Springs, IA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
Holly Springs, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Holly Springs, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Holly Springs, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Holly Springs, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
