2025 Compare Climate & Weather:
Alton, IL vs New York, NY

Highlights

On average, there are 224 sunny days per year in New York. Alton averages 200 sunny days per year. The US average is 205 sunny days.

New York, New York gets 46.6 inches of rain, on average, per year. Alton, Illinois gets 41.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

New York averages 25.3 inches of snow per year. Alton averages 15.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

New York, New York
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 26.1
Rain: averages 46.6 inches of rain a year
Snow: averages 25.3 inches of snow a year

Alton, Illinois
Summer High: the July high is around 88.7 degrees
Winter Low: the January low is 22.7
Rain: averages 41.7 inches of rain a year
Snow: averages 15.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for New York is 7.3 (10=best), which means it is one of the most pleasant places in New York.

The annual BestPlaces Comfort Index for Alton is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

Today's Weather - Alton, IL

59°F

Today's Weather - New York, NY

67°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Alton / New York

July is the hottest month for Alton with an average high temperature of 88.7°, which ranks it as one of the hottest places in Illinois. In Alton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Alton are May, September and June.

July is the hottest month for New York with an average high temperature of 84.2°, which ranks it as one of the hottest places in New York. In New York, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for New York are June, September and August.

January has the coldest nighttime temperatures for Alton with an average of 22.7°. This is one of the warmest places in Illinois.

January has the coldest nighttime temperatures for New York with an average of 26.1°. This is one of the warmest places in New York.

In Alton, there are 37.1 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In New York, there are 14.2 days annually when the high temperature is over 90°, which is one of the hottest places in New York.

In Alton, there are 87.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In New York, there are 70.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in New York.

In Alton, there are 1.7 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

In New York, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in New York.

May is the wettest month in Alton with 5.0 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 41.7 inches in Alton means that it is wetter than most places in Illinois.


July is the wettest month in New York with 4.5 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 46.6 inches in New York means that it is wetter than most places in New York.

May is the rainiest month in Alton with 11.3 days of rain, and September is the driest month with only 7.0 rainy days. There are 104.2 rainy days annually in Alton, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

April is the rainiest month in New York with 11.2 days of rain, and September is the driest month with only 8.3 rainy days. There are 118.8 rainy days annually in New York, which is less rainy than most places in New York. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 15.5 inches in Alton means that it is less snowy than most places in Illinois.

An annual snowfall of 25.3 inches in New York means that it is less snowy than most places in New York.

January is the snowiest month in Alton with 4.8 inches of snow, and 5 months of the year have significant snowfall.

February is the snowiest month in New York with 8.4 inches of snow, and 5 months of the year have significant snowfall.