October weather forecast
Grinnell, KS

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Weather in October

October, like September, in Grinnell, Kansas, is another refreshing autumn month, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 65.7°F (18.7°C).

Temperature

As October arrives, Grinnell's weather displays a notable decrease in high-temperatures, falling from September's warm 81.9°F (27.7°C) to an enjoyable 65.7°F (18.7°C). Grinnell experiences a steady low-temperature of 46.6°F (8.1°C) throughout October.

Humidity

In October, the average relative humidity in Grinnell is 53%.

Rainfall

In Grinnell, during October, the rain falls for 7.8 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Grinnell, during the entire year, the rain falls for 105.4 days and collects up to 13.7" (348mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. October is the first month it typically snows in Grinnell. Throughout October, in the average 0.4 snowfall days, it receives 0.16" (4mm) of snow. In Grinnell, Kansas, during the entire year, snow falls for 12.1 days and aggregates up to 3.5" (89mm) of snow.

Daylight

In October, the average length of the day in Grinnell is 11h and 10min.
On the first day of the month, sunrise is at 7:39 am and sunset at 7:24 pm. On the last day of October, sunrise is at 8:09 am and sunset at 6:42 pm CDT.

Sunshine

In October, the average sunshine is 7.9h.

UV index

In Grinnell, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 3 in October leads to these recommendations:
Heed the precautions - It is counselled to guard against solar damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Grinnell in October?

The high-temperature, in October, in Grinnell, is 65.7°F (18.7°C), while the low-temperature averages to 46.6°F (8.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in September is estimated at 82.4°F (28°C).

What is the average humidity in October in Grinnell?

In Grinnell, the average relative humidity in October is 53%.

How many days does it rain in October in Grinnell?

In Grinnell, Kansas, in October, during 7.8 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

When does it start to snow in Grinnell?

October is the first month it typically snows in Grinnell. Throughout October, in the average 0.4 snowfall days, it receives 0.16" (4mm) of snow.

What is the average length of the day in October in Grinnell?

The average day length in October in Grinnell, Kansas, is 11h and 10min.

When are sunrise and sunset in October in Grinnell?

On the first day of October in Grinnell, Kansas, sunrise is at 7:39 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 6:42 pm CDT.

How long on average sun shines in October in Grinnell?

The average sunshine duration in October is 7.9h.

How high is the UV index in October in Grinnell?

In Grinnell, Kansas, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Grinnell, KS

Average temperature in October - Grinnell, KS
  • Average high temperature in October: 65.7°F

The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is December (41.9°F).

  • Average low temperature in October: 46.6°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in October
Grinnell, KS

Average pressure in October - Grinnell, KS
  • Average pressure in October: 29.99"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

Average wind speed in October
Grinnell, KS

Average wind speed in October - Grinnell, KS
  • Average wind speed in October: 11.5mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.1mph).

Average humidity in October
Grinnell, KS

Average humidity in October - Grinnell, KS
  • Average humidity in October: 53%

The months with the highest relative humidity are January and December (63%).
The month with the lowest relative humidity is July (50%).

Average rainfall in October
Grinnell, KS

Average rainfall in October - Grinnell, KS
  • Average rainfall in October: 1.06"

The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and November (0.39").

Average rainfall days in October
Grinnell, KS

Average rainfall days in October - Grinnell, KS
  • Average rainfall days in October: 7.8 days

The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is November (4 days).

Average snowfall in October
Grinnell, KS

Average snowfall in October - Grinnell, KS
  • Average snowfall in October: 0.16"

The month with the highest snowfall is December (1.06").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Grinnell, KS

Average snowfall days in October - Grinnell, KS
  • Average snowfall days in October: 0.4 days

The month with the highest number of snowfall days is February (3.9 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
Grinnell, KS

Average daylight in October / Average sunshine in October - Grinnell, KS
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 7h and 5min

The months with the most sunshine are June and July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

Average sunshine days in October
Grinnell, KS

Average sunshine days in October - Grinnell, KS
  • Average sunshine days in October: 20.9 days

The month with the most sunshine days is December (23.7 days).
The months with the least sunshine days are June and July (14.7 days).

Average UV index in October
Grinnell, KS

Average UV index in October - Grinnell, KS
  • Average UV index in October: 3

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Grinnell, KS

Average cloud cover in October - Grinnell, KS
  • Average cloud cover in October: 22

The months with the most cloud cover are February and April (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 17).

Average visibility in October
Grinnell, KS

Average visibility in October - Grinnell, KS
  • 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).

Grinnell, Kansas, USA

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