Weather forecast for 10 daysGrinnell, KS

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 72°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 16mphS 188°
  • Humidity: 40%
  • UV index: 4
  • Sunrise: 7:55 am CDT
  • Sunset: 6:59 pm CDT
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Today, in Grinnell, open skies and radiant sunshine are expected.
The day's temperature range will span from a high of a pleasant 71.6°F to a minimum of an icy 39.2°F.
The temperature is forecasted to be slightly warmer than the standard October peak of 65.7°F.
Sunrise will be at 7:55 am and sunset at 6:59 pm; the daylight will last for 11h and 4min.

10-day overview

Daily temperatures

Warmest period: Thursday - Friday 79°C.
Minimum temperature: 68°C.

Chance of precipitation

Highest chance: Saturday 24%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 72°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 16mphS 188°
  • Humidity: 40%
  • UV index: 4
  • Sunrise: 7:55 am CDT
  • Sunset: 6:59 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSSE 151°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:56 am CDT
  • Sunset: 6:58 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 15mphSSE 166°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:57 am CDT
  • Sunset: 6:56 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 77°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 7mphNNW 332°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:58 am CDT
  • Sunset: 6:55 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 79°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 14mphSE 131°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 7:59 am CDT
  • Sunset: 6:54 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 79°F
  • 57°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 23mphS 182°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 8:00 am CDT
  • Sunset: 6:52 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 72°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 16mphSW 216°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 8:01 am CDT
  • Sunset: 6:51 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 68°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 12mphSE 139°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 8:02 am CDT
  • Sunset: 6:50 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 16mphS 174°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 8:03 am CDT
  • Sunset: 6:48 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 17mphS 182°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 8:04 am CDT
  • Sunset: 6:47 pm CDT
  • ▼
A combination of cloudy and sunny weather is expected.
Rain is not predicted in Grinnell in the upcoming days.
In the upcoming days, the maximum temperature will vary between 68°F and 78.8°F, while the fluctuation in night temperatures will be significant, as temperatures overnight will fluctuate from 39.2°F up to 59°F.
With a maximum temperature of 78.8°F, Thursday and Friday will be the warmest days; with a maximum temperature of 68°F, Monday, next Sunday and Monday will be the coldest days.
Updated: Oct 18, 2026 @ 06:25:58 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Grinnell, predominantly sunny weather will make for pleasant outdoor conditions.

Today, the highest temperature will be 71.6°F, while the lowest temperature will be 39.2°F.
Today, the maximum temperature will be moderately higher than the average highest temperature in October. Today, the lowest temperature will be also a few degrees lower than the average low temperature.

On Sunday, in Grinnell, sunrise will be at 7:55 am and sunset at 6:59 pm (CDT).

In Grinnell, the length of the day today will be 11h and 4min.