Weather forecast for tomorrow
Merrimac, IA

Weather forecast for tomorrow

Friday, Jun 20.

AM Showers
5:32 am

8:44 pm
CDT
AM Showers
91°F / 77°F
  • Wind: 18mph S
  • Humidity: 71%
  • Precip. probability: 39%
  • Precipitation: 0.12"
  • UV index: 9
Tomorrow, in Merrimac, expect a damp start with early morning showers.
Minimal precipitation is anticipated. Temperatures are predicted to range from a maximum of a blazing 91.4°F to a minimum of a moderately hot 77°F.
The maximum heat index, which adjusts the air temperature based on humidity, is evaluated at a scorching 111.2°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Forecast models suggest hotter conditions, with a peak that mirrors July's climate average rather than June's.
Sunrise will be at 5:32 am and sunset at 8:44 pm; tomorrow's daylight will last for 15h and 11min.

Frequently asked questions

What is the weather forecast for Merrimac for tomorrow?
Tomorrow, light morning rain showers are possible throughout the early hours.
Will it rain tomorrow?
Tomorrow, there is a low chance of minimal precipitation in Merrimac.
What will be the maximum temperature tomorrow in Merrimac?
Tomorrow, the highest temperature will be 91.4°F, while the lowest temperature will be 77°F. The maximum heat index, which integrates air moisture with ambient temperature, is evaluated at 111.2°F.
The maximum temperature will be noticeably higher than the average highest temperature of 79.9°F in June. The lowest temperature will be also significantly higher than the average low of 63.7°F.
What time are sunrise and sunset tomorrow?
On Friday, in Merrimac, sunrise will be at 5:32 am and sunset at 8:44 pm (CDT).
How many hours of daylight will Merrimac have tomorrow?
In Merrimac, tomorrow, there will be 15h and 11min of daylight.

Hourly weather forecast

12 am
  • 70°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SSW
  • Pressure: 29.91"Hg
  • Humidity: 85%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 68°F
  • Feels like:
    70°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SSW
  • Pressure: 29.91"Hg
  • Humidity: 85%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
4 am
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Wind: 8mph SSW
  • Pressure: 29.88"Hg
  • Humidity: 87%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
Sunrise: 5:32 am
6 am
  • 66°F
  • Feels like:
    68°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 8mph S
  • Pressure: 29.91"Hg
  • Humidity: 90%
  • Precip. probability: 19%
  • Precipitation: 0"
  • Visibility: 10mi
8 am
  • 72°F
  • Feels like:
    73°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 10mph S
  • Pressure: 29.88"Hg
  • Humidity: 84%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 77°F
  • Feels like:
    81°F
Few Showers
Few Showers
  • Wind: 14mph S
  • Pressure: 29.88"Hg
  • Humidity: 75%
  • Precip. probability: 34%
  • Precipitation: 0.04"
  • Visibility: 10mi
12 pm
  • 81°F
  • Feels like:
    84°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 14mph S
  • Pressure: 29.88"Hg
  • Humidity: 70%
  • Precip. probability: 38%
  • Precipitation: 0.04"
  • Visibility: 7mi
2 pm
  • 84°F
  • Feels like:
    91°F
Partly Cloudy
Partly Cloudy
  • Wind: 17mph S
  • Pressure: 29.8"Hg
  • Humidity: 63%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 88°F
  • Feels like:
    99°F
Sunny
Sunny
  • Wind: 18mph S
  • Pressure: 29.74"Hg
  • Humidity: 64%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 90°F
  • Feels like:
    100°F
Sunny
Sunny
  • Wind: 17mph SSW
  • Pressure: 29.71"Hg
  • Humidity: 65%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 86°F
  • Feels like:
    95°F
Sunny
Sunny
  • Wind: 15mph SSW
  • Pressure: 29.71"Hg
  • Humidity: 69%
  • Precip. probability: 2%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:44 pm
10 pm
  • 82°F
  • Feels like:
    90°F
Clear
Clear
  • Wind: 14mph SSW
  • Pressure: 29.74"Hg
  • Humidity: 77%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, on Friday, weather will be unstable, and a mix of sunny, gloomy, rain-soaked and storm-filled weather is forecasted.
Rain is forecasted from 10 am to 12 pm. With light precipitation of 0.08", most rainfall is expected at 11 am.
The temperature will be between a minimum of 66.2°F and a maximum of 89.6°F. The feels-like temperature will be between a minimum of 68°F and a maximum of 100.4°F. The hottest part of the day will be at 5 pm and 6 pm.
The maximum is expected to resemble July's average high of 82.4°F rather than June's. The expected low will be also more similar to what’s common in July than the current June average of 63.7°F.
Updated: Jun 19, 2025 @ 12:42:50 UTC
Published by: Weather U.S. | About Us
Data Sources | |
Weather Forecasting & Climate
Share