Sparta (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sparta.
Climate overview of Sparta
Sparta, Illinois, United States of America, sees big temperature differences between seasons, with July peaking at 31°C (88°F) and January dropping to 5°C (41°F).
The city receives considerable rain/snowfall, with around 1212 mm (48 in) annually. May is the wettest month. Sunshine peaks in July, when the city sees around 10.4 hours of sunshine per day.
Sparta Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sparta — and find the best time to visit.
Monthly Temperature in Sparta
Visitors to Sparta can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 5°C (41°F) in the coolest month, January.
Nights vary from 20°C (68°F) in July to around -5°C (23°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sparta
Sparta is known for its substantial rain/snowfall, with annual precipitation reaching 1212 mm (48 in). The climate in Sparta shows significant variation throughout the year. Expect high rainfall in May, the wettest month, with an average of 148 mm (5.8 in) of precipitation over 14 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 56 mm (2.2 in) of snow/rainfall over 8 snowy/rainy days. For more details, please visit our Sparta 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 Sparta
For those who appreciate different seasons, Sparta serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.4 hours of sunshine daily, and embrace the darker days in December, offering only 4.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Sparta by Month
The relative humidity is high throughout the year in Sparta.
The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Sparta
The weather does bring rainfall during this period, between 89 mm (3.5 in) and 148 mm (5.8 in). Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Sparta
What is the best time to visit Sparta?
September and October typically offer the most optimal weather in Sparta. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Sparta?
Daytime highs range from 5°C (41°F) in January to 31°C (88°F) in July. Nighttime lows range from -5°C (23°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Sparta get?
Annual rainfall is around 1212 mm (48 in). May is the wettest month with 148 mm (5.8 in), while January is the driest with 56 mm (2.2 in).
How sunny is Sparta?
Sparta receives around 2,594 hours of sunshine per year. July is the sunniest month with 311 hours, while December is the cloudiest with just 128 hours. Overall, Sparta enjoys abundant sunshine.
Sparta 3-Day Forecast
Sparta (IL) 3-Day Forecast
Sparta on the map
Sparta is highlighted — select any city to see its climate.
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