2024 Compare Climate & Weather:
Acton, MA vs St. Louis, MO
Change Cities
Highlights
On average, there are 202 sunny days per year in St. Louis. Acton averages 199 sunny days per year. The US average is 205 sunny days.
St. Louis, Missouri gets 42.2 inches of rain, on average, per year. Acton, Massachusetts gets 48 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
St. Louis averages 15.5 inches of snow per year. Acton averages 50.6 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
St. Louis, Missouri
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 22.8
Rain: averages 42.2 inches of rain a year
Snow: averages 15.5 inches of snow a year
Acton, Massachusetts
Summer High: the July high is around 83.1 degrees
Winter Low: the January low is 16.2
Rain: averages 48 inches of rain a year
Snow: averages 50.6 inches of snow a year
BESTPLACES COMFORT INDEX
St. LouisThe annual BestPlaces Comfort Index for St. Louis is 7.2 (10=best), which means it is more comfortable than most places in Missouri.
7.2 / 10
September, May and October are the most pleasant months in St. Louis, while January and December are the least comfortable months.
ActonThe annual BestPlaces Comfort Index for Acton is 6.9 (10=best), which means it is about average compared to other places in Massachusetts.
6.9 / 10
August, July and June are the most pleasant months in Acton, while January and February are the least comfortable months.
Today's Weather - Acton, MA
3 AM PST
Sunny
52°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Today | Sunny | 80° / 58° | NW 2 to 6 mph |
| Sunday | Chance Showers And Thunderstorms | 83° / 58° | S 6 mph |
| Memorial Day | Mostly Cloudy then Chance Rain Showers | 72° / 63° | SE 5 to 12 mph |
| Tuesday | Rain Showers Likely | 81° / 59° | SW 7 to 12 mph |
| Wednesday | Chance Rain Showers | 77° / 54° | SW 5 to 9 mph |
| Thursday | Chance Rain Showers | 69° / 51° | NW 5 to 8 mph |
| Friday | Mostly Sunny then Slight Chance Rain Showers | 70° / 51° | NW 7 mph |
Today's Weather - St. Louis, MO
3 AM PST
Partly Cloudy
67°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Overnight | Partly Cloudy | 61° / 81° | NW 2 to 6 mph |
| Saturday Night | Partly Cloudy then Slight Chance Showers And Thunderstorms | 67° / 87° | SE 6 to 9 mph |
| Sunday Night | Showers And Thunderstorms Likely | 63° / 79° | W 7 to 13 mph |
| Monday Night | Mostly Clear | 61° / 79° | W 5 to 9 mph |
| Tuesday Night | Mostly Clear | 57° / 79° | NW 2 to 8 mph |
| Wednesday Night | Mostly Clear | 57° / 81° | NE 2 to 6 mph |
| Thursday Night | Partly Cloudy then Slight Chance Rain Showers | 59° / 81° | SE 6 mph |
Average Monthly High / Low (°F)
| Month | Acton, MA | St. Louis, MO |
|---|
| January | 35° / 16° | 40° / 23° |
| February | 38° / 19° | 45° / 27° |
| March | 47° / 27° | 56° / 36° |
| April | 58° / 37° | 67° / 46° |
| May | 69° / 46° | 76° / 56° |
| June | 78° / 56° | 85° / 65° |
| July | 83° / 61° | 89° / 69° |
| August | 82° / 60° | 88° / 68° |
| September | 74° / 51° | 80° / 59° |
| October | 62° / 40° | 69° / 47° |
| November | 51° / 32° | 56° / 37° |
| December | 40° / 22° | 43° / 27° |
Hot, Freezing, Rainy, Snowy Days: Acton / St. Louis
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 28 / 25 | 11 / 8 | 7 / 3 |
| February | 0 / 0 | 25 / 20 | 10 / 7 | 5 / 2 |
| March | 0 / 0 | 22 / 12 | 12 / 10 | 4 / 1 |
| April | 0 / 0 | 8 / 2 | 12 / 11 | 1 / 0 |
| May | 1 / 1 | 1 / 0 | 13 / 11 | 0 / 0 |
| June | 2 / 7 | 0 / 0 | 11 / 9 | 0 / 0 |
| July | 5 / 13 | 0 / 0 | 10 / 8 | 0 / 0 |
| August | 3 / 11 | 0 / 0 | 10 / 8 | 0 / 0 |
| September | 1 / 3 | 0 / 0 | 9 / 7 | 0 / 0 |
| October | 0 / 0 | 6 / 2 | 10 / 8 | 0 / 0 |
| November | 0 / 0 | 17 / 10 | 11 / 9 | 1 / 1 |
| December | 0 / 0 | 26 / 22 | 11 / 9 | 5 / 3 |
July is the hottest month for Acton with an average high temperature of 83.1°, which ranks it as warmer than most places in Massachusetts. In Acton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Acton are June, August and September.
July is the hottest month for St. Louis with an average high temperature of 88.5°, which ranks it as about average compared to other places in Missouri. In St. Louis, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Louis are May, September and June.
January has the coldest nighttime temperatures for Acton with an average of 16.2°. This is colder than most places in Massachusetts.
January has the coldest nighttime temperatures for St. Louis with an average of 22.8°. This is warmer than most places in Missouri.
In Acton, there are 11.4 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.
In St. Louis, there are 36.0 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.
In Acton, there are 133.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.
In St. Louis, there are 91.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.
In Acton, there are 4.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.
In St. Louis, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.
March is the wettest month in Acton with 4.6 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Summer with 26% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 48.0 inches in Acton means that it is about average compared to other places in Massachusetts.
May is the wettest month in St. Louis with 4.8 inches of rain, and the driest month is February with 2.3 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 42.2 inches in St. Louis means that it is drier than most places in Missouri.
May is the rainiest month in Acton with 12.6 days of rain, and September is the driest month with only 8.9 rainy days. There are 128.6 rainy days annually in Acton, 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 St. Louis with 11.3 days of rain, and September is the driest month with only 7.0 rainy days. There are 105.3 rainy days annually in St. Louis, which is rainier than most places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 23% chance of a rainy day.
An annual snowfall of 50.6 inches in Acton means that it is snowier than most places in Massachusetts.
An annual snowfall of 15.5 inches in St. Louis means that it is snowier than most places in Missouri.
January is the snowiest month in Acton with 15.4 inches of snow, and 6 months of the year have significant snowfall.
January is the snowiest month in St. Louis with 4.9 inches of snow, and 5 months of the year have significant snowfall.
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.
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 Acton
Reviews for 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 St. Louis
Most Recent Searches On Compare Climate & Weather
| Compare City | Compared To This City | |
| Manhattan, Kansas | Lenexa, Kansas | Compare |
| Hendersonville, North Carolina | Seattle, Washington | Compare |
| Orlando, Florida | Louisville, Kentucky | Compare |
| Phoenix, Arizona | Santa Fe, New Mexico | Compare |
| Perham, Minnesota | Tipton, Iowa | Compare |
| Lihue, Hawaii | Poipu, Hawaii | Compare |
| Milwaukee, Wisconsin | Rochester, New York | Compare |
| Des Moines, Iowa | Boise City, Idaho | Compare |
| San Juan Capistrano, California | San Diego, California | Compare |
| Des Moines, Iowa | Boise City, Idaho | Compare |
| Des Moines, Iowa | Boise City, Idaho | Compare |
| Knoxville, Tennessee | Portland, Oregon | Compare |
| Acton, California | Bullhead City, Arizona | Compare |
| Reno, Nevada | Oklahoma City, Oklahoma | Compare |
| Lone Jack, Missouri | Plano, Texas | Compare |
| San Jose, California | Bullhead City, Arizona | Compare |
| Reno, Nevada | Oklahoma City, Oklahoma | Compare |
| Bend, Oregon | Clifton Forge, Virginia | Compare |
| Hilton Head Island, South Carolina | Atlanta, Georgia | Compare |
| West Lafayette, Indiana | Lexington, Kentucky | Compare |