Weather forecast for tomorrowMercer, IA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 17mphSSW 192°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:33 am CDT
  • Sunset: 6:33 pm CDT
  • ▼
On Sunday, in Mercer, skies will stay clear and sunny.
Temperatures will oscillate between an enjoyable 66.2°F at their highest and a frosty 42.8°F at their lowest.
Tomorrow, the maximum temperature is predicted to be relatively higher than the common October peak of 61.3°F.
Sunrise will be at 7:33 am and sunset at 6:33 pm; tomorrow's daylight will last for 11h and 0min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 39°C.

Chance of precipitation

Highest chance: 6 am 5%.

Hourly weather forecast

  • 12 am
  • 43°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphSSW 193°
  • Humidity: 76%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 43°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphSSW 193°
  • Humidity: 79%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphSSW 195°
  • Humidity: 83%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 39°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphSSW 195°
  • Humidity: 85%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:33 am
  • 8 am
  • 41°F
  • Feels like:
    34°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphS 190°
  • Humidity: 85%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 15mphSSW 193°
  • Humidity: 67%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphSSW 196°
  • Humidity: 48%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphSSW 195°
  • Humidity: 40%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphS 187°
  • Humidity: 38%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphS 181°
  • Humidity: 43%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:33 pm
  • 8 pm
  • 55°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphS 174°
  • Humidity: 60%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 9mphS 181°
  • Humidity: 70%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, mainly sunny weather and a cloudless sky are anticipated.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 5 pm.
The maximum temperature tomorrow will be a couple of degrees higher than October's average high. The expected low will be also comparable to the average minimum in October, which is 44.4°F.
Updated: Oct 18, 2026 @ 03:58:17 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, conditions will remain bright with clear skies.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 42.8°F.
Tomorrow, the highest temperature will be moderately higher than the average maximum temperature in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Mercer, sunrise will be at 7:33 am and sunset at 6:33 pm (CDT).

Tomorrow in Mercer, the daylight will last for 11h and 0min.