Merrill (WI) Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Merrill.

Climate overview of Merrill

Temperatures in Merrill, Wisconsin, United States of America, vary greatly throughout the year. July is the hottest month at 27°C (81°F), while February is the coldest at -6°C (21°F).

With around 851 mm (34 in) of annual rain/snowfall, the city has moderate precipitation levels. June is the wettest month and February the driest. It also has a distinct dry season from January to February.

Merrill Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Merrill — and find the best time to visit.

Monthly Temperature in Merrill

The climate in Merrill is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -6°C (21°F) in the coolest month, February.

Nights vary from 14°C (57°F) in July to around -16°C (3°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Merrill

Generally, Merrill receives mid-range precipitation levels, with 851 mm (34 in) annually. The climate in Merrill shows significant variation throughout the year. Expect high rainfall in June, the wettest month, with an average of 122 mm (4.8 in) of precipitation over 15 rainy days.

In contrast, the driest month February offers drier and sunnier days, with around 20 mm (0.8 in) of snowfall over 7 snowy days. For more details, please visit our Merrill Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Best Time to Visit Merrill

Merrill's weather is most enjoyable during May, June, July, August and September, with comfortable temperatures from 19°C (67°F) to 27°C (80°F). The moderate conditions ensure pleasant weather for exploring the area. Expect varied weather during this period with rainfall between 88 mm (3.5 in) and 122 mm (4.8 in), providing a good balance of sunny and rainy days.

Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.

Frequently asked questions about the climate in Merrill

What is the best time to visit Merrill?

September typically offers the most optimal weather in Merrill. In contrast, January, February, March, November and December tend to have less optimal conditions. Merrill has a distinct dry season from January to February.

What temperatures can I expect in Merrill?

Daytime highs range from -6°C (21°F) in February to 27°C (81°F) in July. Nighttime lows range from -16°C (3°F) to 14°C (57°F). Temperatures vary considerably through the year.

How much rain does Merrill get?

Annual rainfall is around 851 mm (34 in). June is the wettest month with 122 mm (4.8 in), while February is the driest with 20 mm (0.8 in).

Merrill 3-Day Forecast

Merrill (WI) 3-Day Forecast

Merrill on the map

Merrill is highlighted — select any city to see its climate.

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Where to go in July — average daytime high across popular destinations.

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