September weather forecastRenwick, IA
September
Weather in September
September, the first month of the autumn in Renwick, is still a warm month, with an average temperature varying between 73.6°F (23.1°C) and 54.5°F (12.5°C).Temperature
The beginning of September records an average high-temperature of a still moderately hot 73.6°F (23.1°C), marking a negligible difference from August's 78.6°F (25.9°C). Throughout the month of September, Renwick expects an average low of 54.5°F (12.5°C).Humidity
In Renwick, the average relative humidity in September is 76%.Rainfall
In Renwick, Iowa, in September, it is raining for 11.5 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, there are 131.8 rainfall days, and 25.31" (643mm) of precipitation is accumulated.Snowfall
In Renwick, snow does not fall in June through September.Daylight
In September, the average length of the day in Renwick is 12h and 29min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:49 pm. On the last day of September, in Renwick, sunrise is at 7:12 am and sunset at 6:58 pm CDT.
Sunshine
In Renwick, the average sunshine in September is 9.1h.UV index
In Renwick, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Renwick, IA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).
Average pressure in September
Renwick, 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
Renwick, IA
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Renwick, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Renwick, IA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Renwick, IA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Renwick, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Renwick, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Renwick, IA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 6min
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 48min).
Average sunshine days in September
Renwick, IA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Renwick, 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, March, October, November and December (UV index 2).
Average cloud cover in September
Renwick, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Renwick, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
