Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October is characterized by a reduction in the average high-temperature, from a moderately hot 75.4°F (24.1°C) in September to a comfortable 61.7°F (16.5°C). Throughout October nights, Letts experiences a consistent temperature average of 45.3°F (7.4°C).Humidity
October is the least humid month, with an average relative humidity of 71%.Rainfall
In October, the rain falls for 11.8 days. Throughout October, 2.6" (66mm) of precipitation is accumulated. In Letts, during the entire year, the rain falls for 153.8 days and collects up to 31.69" (805mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.87" (22mm) of snow. In Letts, during the entire year, snow falls for 40.1 days and aggregates up to 16.38" (416mm) of snow.Daylight
In October, the average length of the day is 11h and 5min.On the first day of October in Letts, sunrise is at 7:02 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 6:00 pm CDT.
Sunshine
In Letts, Iowa, the average sunshine in October is 5.5h.UV index
The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In October, a daily UV index of 3 turns into the following recommendations:
Take precautions - Protection against sun damage is advised. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the least humid month?
What is the average humidity in October?
How much does it rain in October?
When does it start snowing?
How many hours of daylight does Letts have in October?
When are sunrise and sunset in October?
How long on average sun shines in October in Letts?
What is the UV index reading in October?
Average temperature in October
Letts, IA
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in October: 45.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in October
Letts, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in October
Letts, IA
- Average wind speed in October: 9.5mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in October
Letts, IA
- Average humidity in October: 71%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Letts, IA
- Average rainfall in October: 2.6"
The wettest month (with the highest rainfall) is May (5").
The driest months (with the least rainfall) are February and December (1.46").
Average rainfall days in October
Letts, IA
- Average rainfall days in October: 11.8 days
The month with the highest number of rainy days is May (19.7 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in October
Letts, IA
- Average snowfall in October: 0.87"
The month with the highest snowfall is January (4.92").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Letts, IA
- Average snowfall days in October: 0.4 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Letts, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in October
Letts, IA
- Average sunshine days in October: 16.6 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in October
Letts, IA
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Letts, IA
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in October
Letts, IA
- Average visibility in October: 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).
Letts, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location