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 high-temperature average in September for Randall is a still warm 74.3°F (23.5°C), staying closely aligned with August's conditions. Randall anticipates an average minimum temperature of 55.4°F (13°C) in the month of September.Humidity
The average relative humidity in September in Randall is 76%.Rainfall
In September, in Randall, Iowa, the rain falls for 12.4 days. Throughout September, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 143.3 rainfall days, and 29.25" (743mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:40 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
In Randall, the average sunshine in September is 9.3h.UV index
In Randall, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Randall in September?
What is the average humidity in September in Randall?
How many days does it rain in September in Randall?
When it does not snow in Randall?
Does it snow in Randall in September?
How many hours of daylight does Randall have in September?
What time are sunrise and sunset in September in Randall?
How long on average sun shines in September in Randall?
What is the UV index intensity in September in Randall?
Average temperature in September
Randall, IA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Randall, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Randall, IA
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Randall, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Randall, IA
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Randall, IA
- Average rainfall days in September: 12.4 days
The months with the highest number of rainy days are May and June (19.2 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Randall, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Randall, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Randall, 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: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Randall, IA
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (8.5 days).
Average UV index in September
Randall, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (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
Randall, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Randall, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Randall, Iowa, USA
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