2025 Compare Climate & Weather:
Pottstown, PA vs Spearfish, SD

Highlights

On average, there are 227 sunny days per year in Spearfish. Pottstown averages 209 sunny days per year. The US average is 205 sunny days.

Spearfish, South Dakota gets 21.3 inches of rain, on average, per year. Pottstown, Pennsylvania gets 46.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Spearfish averages 56.4 inches of snow per year. Pottstown averages 16.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Spearfish, South Dakota
Summer High: the July high is around 87.6 degrees
Winter Low: the January low is 17
Rain: averages 21.3 inches of rain a year
Snow: averages 56.4 inches of snow a year

Pottstown, Pennsylvania
Summer High: the July high is around 85.7 degrees
Winter Low: the January low is 22.8
Rain: averages 46.9 inches of rain a year
Snow: averages 16.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Spearfish is 6.9 (10=best), which means it is more comfortable than most places in South Dakota.

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

Today's Weather - Pottstown, PA

55°F

Today's Weather - Spearfish, SD

56°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Pottstown / Spearfish

July is the hottest month for Pottstown with an average high temperature of 85.7°, which ranks it as one of the hottest places in Pennsylvania. In Pottstown, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pottstown are September, June and May.

July is the hottest month for Spearfish with an average high temperature of 87.6°, which ranks it as warmer than most places in South Dakota. In Spearfish, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Spearfish are June, September and August.

January has the coldest nighttime temperatures for Pottstown with an average of 22.8°. This is one of the warmest places in Pennsylvania.

January has the coldest nighttime temperatures for Spearfish with an average of 17.0°. This is one of the warmest places in South Dakota.

In Pottstown, there are 20.9 days annually when the high temperature is over 90°, which is one of the hottest places in Pennsylvania.

In Spearfish, there are 31.3 days annually when the high temperature is over 90°, which is hotter than most places in South Dakota.

In Pottstown, there are 103.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Pennsylvania.

In Spearfish, there are 144.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Dakota.

In Pottstown, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

In Spearfish, there are 12.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.

July is the wettest month in Pottstown with 4.8 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 46.9 inches in Pottstown means that it is wetter than most places in Pennsylvania.


May is the wettest month in Spearfish with 3.6 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Summer with 34% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 21.3 inches in Spearfish means that it is drier than most places in South Dakota.

May is the rainiest month in Pottstown with 11.8 days of rain, and February is the driest month with only 8.0 rainy days. There are 117.1 rainy days annually in Pottstown, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% chance of a rainy day.

June is the rainiest month in Spearfish with 11.7 days of rain, and February is the driest month with only 5.5 rainy days. There are 90.3 rainy days annually in Spearfish, which is one of the rainiest places in South Dakota. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 16.8 inches in Pottstown means that it is one of the least snowy places in Pennsylvania.

An annual snowfall of 56.4 inches in Spearfish means that it is one of the snowiest places in South Dakota.

February is the snowiest month in Pottstown with 6.2 inches of snow, and 5 months of the year have significant snowfall.

March is the snowiest month in Spearfish with 10.8 inches of snow, and 8 months of the year have significant snowfall.