Weather forecast for tomorrowMerrimac, IA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 70°F
- 41°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphSSE 167°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:23 am CDT
- Sunset: 6:20 pm CDT
- details ▼
On Monday, in Merrimac, expect a mix of sun and clouds throughout the day.
Significant temperature fluctuations from a high of a pleasant 69.8°F to a low of an icy 41°F are predicted.
Expect a warmer feel as the forecasted high matches September's 76.3°F, rather than October's average of 61.7°F.
Sunrise will be at 7:23 am and sunset at 6:20 pm; tomorrow's daylight will last for 10h and 57min.
Significant temperature fluctuations from a high of a pleasant 69.8°F to a low of an icy 41°F are predicted.
Expect a warmer feel as the forecasted high matches September's 76.3°F, rather than October's average of 61.7°F.
Sunrise will be at 7:23 am and sunset at 6:20 pm; tomorrow's daylight will last for 10h and 57min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 68°C.
Coldest hour: 6 am 41°C.
Coldest hour: 6 am 41°C.
Chance of precipitation
Highest chance: 6 am 7%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:45°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphS 180°
- Humidity: 82%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 45°F
- Feels like:43°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphS 184°
- Humidity: 87%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 43°F
- Feels like:41°F
Clear
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphS 182°
- Humidity: 94%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 41°F
- Feels like:39°F
Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphS 175°
- Humidity: 96%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:23 am
- 8 am
- 43°F
- Feels like:41°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphS 170°
- Humidity: 93%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 54°F
- Feels like:52°F
Mostly Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphS 176°
- Humidity: 67%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 63°F
- Feels like:63°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSE 168°
- Humidity: 49%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 68°F
- Feels like:68°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphSSE 167°
- Humidity: 42%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 68°F
- Feels like:68°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 165°
- Humidity: 39%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSSE 147°
- Humidity: 46%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:20 pm
- 8 pm
- 55°F
- Feels like:55°F
Mostly Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSE 139°
- Humidity: 65%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:52°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphSE 139°
- Humidity: 76%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of sun-filled and overcast weather is expected.
The temperature will vary between the lowest temperature of 41°F and the highest temperature of 68°F. The warmest part of the day will be from 2 pm to 4 pm.
The day’s peak temperature will reflect September's norm of 76.3°F more than October's 61.7°F. Forecasts indicate a night temperature a couple of degrees lower than the usual October minimum of 45.7°F.
The temperature will vary between the lowest temperature of 41°F and the highest temperature of 68°F. The warmest part of the day will be from 2 pm to 4 pm.
The day’s peak temperature will reflect September's norm of 76.3°F more than October's 61.7°F. Forecasts indicate a night temperature a couple of degrees lower than the usual October minimum of 45.7°F.
Updated: Oct 18, 2026 @ 11:29:45 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Monday, sunny moments will alternate with patchy cloud cover.
Tomorrow, the maximum temperature will be 69.8°F, while the minimum temperature will be 41°F.
The highest temperature will be moderately higher than the average maximum of 61.7°F in October. The lowest temperature will be also moderately lower than the average low of 45.7°F.
The highest temperature will be moderately higher than the average maximum of 61.7°F in October. The lowest temperature will be also moderately lower than the average low of 45.7°F.
On Monday, in Merrimac, sunrise will be at 7:23 am and sunset at 6:20 pm (CDT).
In Merrimac, tomorrow, there will be 10h and 57min of daylight.
