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 average high-temperature during September registers at a still moderately hot 74.5°F (23.6°C), maintaining a close resemblance to the previous month. Montour experiences a nighttime temperature average of 54.7°F (12.6°C) during September.Humidity
In Montour, the average relative humidity in September is 78%.Rainfall
In Montour, in September, it is raining for 11.6 days, with typically 2.64" (67mm) of accumulated precipitation. In Montour, during the entire year, the rain falls for 133.1 days and collects up to 27.76" (705mm) of precipitation.Snowfall
In Montour, snow does not fall in June through September.Daylight
In September, the average length of the day in Montour is 12h and 28min.On the first day of September in Montour, Iowa, sunrise is at 6:37 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:53 pm CDT.
Sunshine
In Montour, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September in Montour is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Montour in September?
What is the average humidity in September in Montour?
How much does it rain in Montour in September?
When it does not snow in Montour?
Does it snow in Montour in September?
How many hours of daylight does Montour have in September?
When are sunrise and sunset in September in Montour?
How many hours of sunshine does Montour have in September?
What is the UV index intensity in September in Montour?
Average temperature in September
Montour, IA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
Montour, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Montour, IA
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Montour, IA
- Average humidity in September: 78%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Montour, IA
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Montour, IA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Montour, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Montour, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Montour, 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 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Montour, IA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Montour, 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
Montour, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in September
Montour, 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).
Montour, Iowa, USA
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