2024 Compare Climate & Weather:
Johnstown, PA vs Bay St. Louis, MS
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Highlights
On average, there are 216 sunny days per year in Bay St. Louis. Johnstown averages 166 sunny days per year. The US average is 205 sunny days.
Bay St. Louis, Mississippi gets 63.6 inches of rain, on average, per year. Johnstown, Pennsylvania gets 44.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Bay St. Louis averages 0 inches of snow per year. Johnstown averages 50.9 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Bay St. Louis, Mississippi
Summer High: the July high is around 89.5 degrees
Winter Low: the January low is 40.4
Rain: averages 63.6 inches of rain a year
Snow: averages 0 inches of snow a year
Johnstown, Pennsylvania
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 18.6
Rain: averages 44.5 inches of rain a year
Snow: averages 50.9 inches of snow a year
BESTPLACES COMFORT INDEX
Bay St. LouisThe annual BestPlaces Comfort Index for Bay St. Louis is 7.2 (10=best), which means it is more comfortable than most places in Mississippi.
7.2 / 10
October, April and November are the most pleasant months in Bay St. Louis, while July and August are the least comfortable months.
JohnstownThe annual BestPlaces Comfort Index for Johnstown is 6.8 (10=best), which means it is less comfortable than most places in Pennsylvania.
6.8 / 10
August, July and June are the most pleasant months in Johnstown, while January and February are the least comfortable months.
Today's Weather - Johnstown, PA
12 AM PST
Slight Chance Rain Showers
59°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| This Afternoon | Slight Chance Rain Showers | 61° / 55° | SE 12 mph |
| Sunday | Mostly Sunny | 79° / 59° | SW 8 to 13 mph |
| Monday | Sunny | 84° / 60° | SW 3 to 9 mph |
| Tuesday | Showers And Thunderstorms Likely | 78° / 55° | SW 3 to 15 mph |
| Wednesday | Mostly Sunny then Slight Chance Rain Showers | 76° / 55° | W 7 to 12 mph |
| Thursday | Mostly Sunny then Slight Chance Showers And Thunderstorms | 80° / 58° | S 7 to 13 mph |
| Friday | Showers And Thunderstorms Likely | 77° / 57° | SW 9 to 14 mph |
Average Monthly High / Low (°F)
| Month | Johnstown, PA | Bay St. Louis, MS |
|---|
| January | 37° / 19° | 60° / 40° |
| February | 41° / 21° | 63° / 44° |
| March | 50° / 27° | 69° / 49° |
| April | 63° / 37° | 75° / 56° |
| May | 73° / 46° | 82° / 65° |
| June | 81° / 55° | 87° / 71° |
| July | 84° / 59° | 90° / 73° |
| August | 83° / 58° | 89° / 73° |
| September | 76° / 51° | 86° / 68° |
| October | 65° / 40° | 78° / 58° |
| November | 53° / 32° | 69° / 49° |
| December | 41° / 23° | 62° / 42° |
Hot, Freezing, Rainy, Snowy Days: Johnstown / Bay St. Louis
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 27 / 8 | 15 / 9 | 8 / 0 |
| February | 0 / 0 | 24 / 3 | 12 / 8 | 7 / 0 |
| March | 0 / 0 | 21 / 1 | 13 / 7 | 4 / 0 |
| April | 0 / 0 | 9 / 0 | 14 / 6 | 1 / 0 |
| May | 0 / 1 | 2 / 0 | 14 / 6 | 0 / 0 |
| June | 3 / 7 | 0 / 0 | 12 / 11 | 0 / 0 |
| July | 6 / 14 | 0 / 0 | 12 / 13 | 0 / 0 |
| August | 4 / 14 | 0 / 0 | 11 / 12 | 0 / 0 |
| September | 1 / 5 | 0 / 0 | 11 / 9 | 0 / 0 |
| October | 0 / 0 | 7 / 0 | 11 / 6 | 0 / 0 |
| November | 0 / 0 | 16 / 2 | 13 / 7 | 2 / 0 |
| December | 0 / 0 | 25 / 6 | 14 / 8 | 6 / 0 |
July is the hottest month for Johnstown with an average high temperature of 84.2°, which ranks it as warmer than most places in Pennsylvania. In Johnstown, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Johnstown are September, June and August.
July is the hottest month for Bay St. Louis with an average high temperature of 89.5°, which ranks it as one of the coolest places in Mississippi. In Bay St. Louis, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Bay St. Louis are October, April and May.
January has the coldest nighttime temperatures for Johnstown with an average of 18.6°. This is about average compared to other places in Pennsylvania.
January has the coldest nighttime temperatures for Bay St. Louis with an average of 40.4°. This is one of the warmest places in Mississippi.
In Johnstown, there are 13.3 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.
In Bay St. Louis, there are 40.5 days annually when the high temperature is over 90°, which is one of the coolest places in Mississippi.
In Johnstown, there are 131.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Pennsylvania.
In Bay St. Louis, there are 20.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Mississippi.
In Johnstown, there are 5.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Pennsylvania.
In Bay St. Louis, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Mississippi.
May is the wettest month in Johnstown with 4.4 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 44.5 inches in Johnstown means that it is wetter than most places in Pennsylvania.
July is the wettest month in Bay St. Louis with 6.6 inches of rain, and the driest month is October with 3.5 inches. The wettest season is Autumn with 30% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 63.6 inches in Bay St. Louis means that it is one of the wettest places in Mississippi.
January is the rainiest month in Johnstown with 14.5 days of rain, and August is the driest month with only 10.5 rainy days. There are 149.6 rainy days annually in Johnstown, which is rainier than most places in Pennsylvania. The rainiest season is Spring when it rains 27% of the time and the driest is Winter with only a 23% chance of a rainy day.
July is the rainiest month in Bay St. Louis with 12.5 days of rain, and April is the driest month with only 5.7 rainy days. There are 99.9 rainy days annually in Bay St. Louis, which is about average compared to other places in Mississippi. The rainiest season is Autumn when it rains 35% of the time and the driest is Summer with only a 19% chance of a rainy day.
An annual snowfall of 50.9 inches in Johnstown means that it is snowier than most places in Pennsylvania.
There is rarely any recorded snowfall in Bay St. Louis, ranking it as one of the least snowy places in Mississippi.
January is the snowiest month in Johnstown with 15.2 inches of snow, and 6 months of the year have significant snowfall.
Any measurable snowfall is a rare occurance in Bay St. Louis.
DID YOU KNOW?
Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.
Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.
Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.
Reviews for Johnstown 
2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of Johnstown
Reviews for Bay St. Louis 2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of Bay St. Louis
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