Monticello (MN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Monticello.
Climate overview of Monticello
Monticello, Minnesota, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 28°C (82°F) in July, while winters cool to -6°C (21°F) in January.
Monticello sees a moderate amount of rain/snowfall, totalling around 812 mm (32 in) per year. It experiences a distinct dry season from November to February, with warm summers and very cold winters, creating some seasonal variation. The most sunshine falls in July, with an average of 11.7 hours of daily sunshine.
Monticello Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Monticello - and find the best time to visit.
Monthly Temperature in Monticello
Depending on the time of the year, temperatures range from comfortable to very cold in Monticello. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -6°C (21°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in July to around -15°C (5°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Monticello
Generally, Monticello has a moderate amount of precipitation, averaging 812 mm (32 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, August it receives high rainfall, averaging 113 mm (4.4 in) of precipitation, recorded across 11 rainy days. In contrast, the driest month January brings less snowfall, with 15 mm (0.6 in) over 9 snowy days. For more details, please visit our Monticello Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Monticello
Seasonal changes in sunshine hours are quite dramatic in Monticello. While July receives considerable daily sunshine with up to 11.7 hours, November marks the darkest time of the year, where sunshine is scarce with only 3.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Monticello by Month
The relative humidity is high throughout the year in Monticello.
The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Monticello
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: July
- Most sunshine: July
- Fewest rainy days: February and November
- Seasonal pattern: A distinct dry season from November to February, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -15°C (5°F).
Frequently asked questions about the climate in Monticello
What is the best time to visit Monticello?
September typically offers the most optimal weather in Monticello. In contrast, January, February, March and December tend to have less optimal conditions. Monticello has a distinct dry season from November to February, with warm summers and very cold winters.
What temperatures can I expect in Monticello?
Daytime highs range from -6°C (21°F) in January to 28°C (82°F) in July. Nighttime lows range from -15°C (5°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Monticello get?
Annual rainfall is around 812 mm (32 in). August is the wettest month with 113 mm (4.4 in), while January is the driest with 15 mm (0.6 in).
How sunny is Monticello?
Monticello receives around 2,713 hours of sunshine per year. July is the sunniest month with 351 hours, while November is the cloudiest with just 114 hours. Overall, Monticello enjoys abundant sunshine.
Monticello 3-Day Forecast
Monticello (MN) 3-Day Forecast
Monticello on the map
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