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
An average high-temperature of a still warm 73.4°F (23°C) marks September, exhibiting a close resemblance to the conditions in August. The average nighttime temperature in Whittemore lowers to a cool 54.5°F (12.5°C) throughout September.Humidity
In September, the average relative humidity in Whittemore is 75%.Rainfall
In Whittemore, during September, the rain falls for 9.5 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 100.5 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
In Whittemore, Iowa, snow does not fall in May through September.Daylight
The average length of the day in September in Whittemore, Iowa, is 12h and 29min.On the first day of September in Whittemore, Iowa, sunrise is at 6:42 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:00 pm CDT.
Sunshine
In Whittemore, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the temperature in September in Whittemore?
What is the average humidity in September in Whittemore?
How many days does it rain in September in Whittemore?
When it does not snow in Whittemore?
Does it snow in Whittemore in September?
What is the average length of the day in September in Whittemore?
What time are sunrise and sunset in September in Whittemore?
How long on average sun shines in September in Whittemore?
How high is the UV index in September in Whittemore?
Average temperature in September
Whittemore, IA
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (23.4°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 (10.8°F).
Average pressure in September
Whittemore, 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
Whittemore, IA
- Average wind speed in September: 8.7mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Whittemore, IA
- Average humidity in September: 75%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Whittemore, IA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Whittemore, IA
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Whittemore, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Whittemore, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.8 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
Whittemore, IA
- Average daylight in September: 12h and 3min
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 1min
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 48min).
Average sunshine days in September
Whittemore, IA
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in September
Whittemore, 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 December (UV index 1).
Average cloud cover in September
Whittemore, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Whittemore, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Whittemore, Iowa, USA
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