Weather forecast for 10 daysGrinnell, IA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 57°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 13mphSSW 201°
  • Humidity: 40%
  • UV index: 4
  • Sunrise: 7:25 am CDT
  • Sunset: 6:26 pm CDT
  • ▼
On Saturday, in Grinnell, a glowing sky and minimal clouds are expected.
The temperature is predicted to oscillate between a maximum of a moderate 57.2°F and a minimum of an icy 39.2°F.
Today's top temperature is set to align with the common October high of 59.9°F.
Sunrise was at 7:25 am and sunset will be at 6:26 pm; the daylight will last for 11h and 1min.

Sunday Oct 18, 2026

  • 66°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 16mphSSW 195°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:26 am CDT
  • Sunset: 6:25 pm CDT
  • ▼
Tomorrow, in Grinnell, clear skies and sunshine are anticipated.
The temperature variation is expected to range from a maximum of an enjoyable 66.2°F to a minimum of a cold 41°F.
Forecasts suggest the maximum temperature will be moderately higher than October's average of 59.9°F.
Sunrise will be at 7:26 am and sunset at 6:25 pm; tomorrow's daylight will last for 10h and 58min.

10-day overview

Daily temperatures

Warmest day: Friday 77°C.
Coldest day: today 57°C.

Chance of precipitation

Highest chance: Monday 26.10. 18%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 57°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 13mphSSW 201°
  • Humidity: 40%
  • UV index: 4
  • Sunrise: 7:25 am CDT
  • Sunset: 6:26 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 66°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 16mphSSW 195°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:26 am CDT
  • Sunset: 6:25 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphS 176°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:27 am CDT
  • Sunset: 6:23 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 7mphSSE 153°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:29 am CDT
  • Sunset: 6:22 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphS 182°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:30 am CDT
  • Sunset: 6:20 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 75°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphSSE 155°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:31 am CDT
  • Sunset: 6:19 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphSSE 148°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:32 am CDT
  • Sunset: 6:17 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 75°F
  • 55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 12mphSSE 165°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:33 am CDT
  • Sunset: 6:16 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 72°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 9mphSSW 198°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:35 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 72°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 7mphE 86°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:36 am CDT
  • Sunset: 6:13 pm CDT
  • ▼
During the upcoming ten-day period, a combination of overcast and mostly clear weather is forecasted.
Rain is not expected in Grinnell in the upcoming days.
Noticeable swings in temperature are expected over the next several days. The maximum temperature will vary between 57.2°F and 77°F, while the variation in nighttime lows will be also notably wide, as nighttime lows are forecast to fall between 39.2°F and 55.4°F.
With the highest temperature of 77°F, Friday will be the warmest day; today is the coldest day, with a maximum temperature of 57.2°F.
Updated: Oct 17, 2026 @ 19:28:10 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, mainly sunny skies with just a few high clouds are anticipated.

Today, the maximum temperature will be 57.2°F, while the minimum temperature will be 39.2°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be a couple of degrees lower than the average low of 44.4°F.

On Saturday, in Grinnell, sunrise was at 7:25 am and sunset will be at 6:26 pm (CDT).

Today, the daylight will last for 11h and 1min.

Tomorrow, uninterrupted sunshine is anticipated.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 41°F.
The maximum temperature will be moderately higher than the average highest temperature of 59.9°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Grinnell, sunrise will be at 7:26 am and sunset at 6:25 pm (CDT).

In Grinnell, the length of the day tomorrow will be 10h and 58min.