July is the hottest month for Ayer with an average high temperature of 83.7°, which ranks it as one of the hottest places in Massachusetts. In Ayer, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ayer are June, September and August.

July is the hottest month for Peterborough with an average high temperature of 80.1°, which ranks it as cooler than most places in New Hampshire. In Peterborough, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Peterborough are August, July and June.

January has the coldest nighttime temperatures for Ayer with an average of 14.4°. This is colder than most places in Massachusetts.

January has the coldest nighttime temperatures for Peterborough with an average of 11.7°. This is warmer than most places in New Hampshire.

In Ayer, there are 13.8 days annually when the high temperature is over 90°, which is one of the hottest places in Massachusetts.

In Peterborough, there are 5.4 days annually when the high temperature is over 90°, which is cooler than most places in New Hampshire.

In Ayer, there are 144.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Peterborough, there are 160.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in New Hampshire.

In Ayer, there are 5.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

In Peterborough, there are 5.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in New Hampshire.

October is the wettest month in Ayer with 4.4 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Summer with 26% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.9 inches in Ayer means that it is about average compared to other places in Massachusetts.


October is the wettest month in Peterborough with 4.6 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Winter with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.2 inches in Peterborough means that it is wetter than most places in New Hampshire.

May is the rainiest month in Ayer with 12.5 days of rain, and September is the driest month with only 8.9 rainy days. There are 127.9 rainy days annually in Ayer, which is rainier than most places in Massachusetts. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

May is the rainiest month in Peterborough with 11.4 days of rain, and February is the driest month with only 8.3 rainy days. There are 117.1 rainy days annually in Peterborough, which is one of the least rainy places in New Hampshire. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 24% chance of a rainy day.

An annual snowfall of 56.1 inches in Ayer means that it is one of the snowiest places in Massachusetts.

An annual snowfall of 68.1 inches in Peterborough means that it is snowier than most places in New Hampshire.

January is the snowiest month in Ayer with 16.9 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Peterborough with 18.9 inches of snow, and 6 months of the year have significant snowfall.

 Most Recent Searches On Compare Climate & Weather