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 warm 79.5°F (26.4°C) to a still moderately hot 73.9°F (23.3°C). An average low-temperature of 55.4°F (13°C) is common during the nights of September.Humidity
The average relative humidity in September in Washta, Iowa, is 74%.Rainfall
In September, the rain falls for 11.9 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 117.4 rainfall days, and 24.61" (625mm) of precipitation is accumulated.Snowfall
In Washta, Iowa, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:48 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:05 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in Washta 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: A maximum high UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are September temperatures in Washta?
What is the average humidity in September in Washta?
How much does it rain in Washta in September?
When it does not snow in Washta?
Does it snow in Washta in September?
What is the average length of the day in September in Washta?
When are sunrise and sunset in September in Washta?
How long on average sun shines in September in Washta?
What is the UV index intensity in September in Washta?
Average temperature in September
Washta, IA
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in September
Washta, IA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Washta, IA
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Washta, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (67%).
Average rainfall in September
Washta, IA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in September
Washta, IA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in September
Washta, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Washta, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Washta, 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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Washta, IA
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Washta, 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 and February (UV index 1).
Average cloud cover in September
Washta, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Washta, 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).
Washta, Iowa, USA
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