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
A notable decrease in the average high-temperature is observed during October, falling from a moderately hot 76.1°F (24.5°C) in September to a refreshing 61.7°F (16.5°C). Grand River experiences an average temperature drop to a frosty 44.4°F (6.9°C) during October nights.Humidity
October is the least humid month, with an average relative humidity of 72%.Rainfall
In Grand River, in October, during 9.9 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Grand River, Iowa, during the entire year, the rain falls for 132.4 days and collects up to 20.24" (514mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.55" (14mm) of snow. In Grand River, during the entire year, snow falls for 30.2 days and aggregates up to 10.16" (258mm) of snow.Daylight
In October, the average length of the day is 11h and 6min.On the first day of the month, sunrise is at 7:13 am and sunset at 6:57 pm. On the last day of October, sunrise is at 7:46 am and sunset at 6:12 pm CDT.
Sunshine
In October, the average sunshine is 5.7h.UV index
In October, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In October, the average maximum UV index of 2 translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What are October temperatures in Grand River?
What is the least humid month in Grand River?
What is the average humidity in October in Grand River?
How much does it rain in Grand River in October?
When does it start snowing in Grand River?
What is the average length of the day in October in Grand River?
What time are sunrise and sunset in October in Grand River?
How long on average sun shines in October in Grand River?
What is the UV index reading in October in Grand River?
Average temperature in October
Grand River, IA
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in October: 44.4°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in October
Grand River, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in October
Grand River, IA
- Average wind speed in October: 9.3mph
The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in October
Grand River, IA
- Average humidity in October: 72%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Grand River, IA
- Average rainfall in October: 1.54"
The wettest month (with the highest rainfall) is June (3.43").
The driest months (with the least rainfall) are January and December (0.67").
Average rainfall days in October
Grand River, IA
- Average rainfall days in October: 9.9 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in October
Grand River, IA
- Average snowfall in October: 0.55"
The month with the highest snowfall is January (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Grand River, IA
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Grand River, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in October
Grand River, IA
- Average sunshine days in October: 18.6 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (8.9 days).
Average UV index in October
Grand River, IA
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in October
Grand River, IA
- Average cloud cover in October: 35
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in October
Grand River, IA
- Average visibility in October: 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).
Grand River, Iowa, USA
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