Weather forecast for tomorrowMercer, IA

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 68°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 11mphS 175°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:34 am CDT
  • Sunset: 6:32 pm CDT
  • ▼
On Monday, in Mercer, a partly cloudy outlook will keep the sky interesting throughout the day.
The temperature is anticipated to oscillate between a maximum of an agreeable 68°F and a minimum of a frosty 44.6°F.
The day’s top temperature is expected to be a couple of degrees higher than the typical October high of 61.3°F.
Sunrise will be at 7:34 am and sunset at 6:32 pm; tomorrow's daylight will last for 10h and 58min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 43°C.

Chance of precipitation

Highest chance: 6 am 7%.

Hourly weather forecast

  • 12 am
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphS 189°
  • Humidity: 79%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 46°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphS 187°
  • Humidity: 86%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 45°F
  • Feels like:
    41°F
Mostly Clear
Mostly Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphS 178°
  • Humidity: 88%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 43°F
  • Feels like:
    39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphSSE 169°
  • Humidity: 92%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:34 am
  • 8 am
  • 45°F
  • Feels like:
    41°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphSSE 162°
  • Humidity: 90%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 54°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphS 172°
  • Humidity: 71%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 63°F
  • Feels like:
    61°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphS 183°
  • Humidity: 53%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphS 186°
  • Humidity: 44%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphS 179°
  • Humidity: 41%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphSSE 167°
  • Humidity: 46%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:32 pm
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphSSE 148°
  • Humidity: 62%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSSE 150°
  • Humidity: 69%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of overcast and sunny weather is predicted.
The temperature will be between the lowest temperature of 42.8°F and the highest temperature of 66.2°F. The warmest part of the day will be from 2 pm to 4 pm.
The maximum temperature will be moderately higher than October's average high of 61.3°F. The expected low will be also consistent with the average minimum in October, which is 44.4°F.
Updated: Oct 18, 2026 @ 11:41:48 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Mercer, moderate cloud cover will mix with sunshine throughout the day.

Tomorrow, the maximum temperature will be 68°F, while the minimum temperature will be 44.6°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 61.3°F in October. The lowest temperature will be in line with the average low of 44.4°F.

On Monday, in Mercer, sunrise will be at 7:34 am and sunset at 6:32 pm (CDT).

In Mercer, Iowa, tomorrow, there will be 10h and 58min of daylight.