2024 Compare Climate & Weather:
Rapid City, SD vs Newcastle, WY
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Highlights
On average, there are 223 sunny days per year in Newcastle. Rapid City averages 226 sunny days per year. The US average is 205 sunny days.
Newcastle, Wyoming gets 17.7 inches of rain, on average, per year. Rapid City, South Dakota gets 18.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Newcastle averages 41.5 inches of snow per year. Rapid City averages 38 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Newcastle, Wyoming
Summer High: the July high is around 86.4 degrees
Winter Low: the January low is 12.5
Rain: averages 17.7 inches of rain a year
Snow: averages 41.5 inches of snow a year
Rapid City, South Dakota
Summer High: the July high is around 85.3 degrees
Winter Low: the January low is 14.2
Rain: averages 18.2 inches of rain a year
Snow: averages 38 inches of snow a year
BESTPLACES COMFORT INDEX
NewcastleThe annual BestPlaces Comfort Index for Newcastle is 7.0 (10=best), which means it is one of the most pleasant places in Wyoming.
7 / 10
August, June and September are the most pleasant months in Newcastle, while December and January are the least comfortable months.
Rapid CityThe annual BestPlaces Comfort Index for Rapid City is 7.0 (10=best), which means it is one of the most pleasant places in South Dakota.
7 / 10
August, July and June are the most pleasant months in Rapid City, while February and January are the least comfortable months.
Today's Weather - Rapid City, SD
6 AM PST
Mostly Sunny then Isolated Showers And Thunderstorms
61°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Today | Mostly Sunny then Isolated Showers And Thunderstorms | 76° / 47° | N 8 to 15 mph |
| Monday | Sunny then Slight Chance Showers And Thunderstorms | 77° / 53° | S 6 to 12 mph |
| Tuesday | Showers And Thunderstorms Likely | 72° / 49° | NW 6 to 17 mph |
| Wednesday | Chance Rain Showers then Chance Showers And Thunderstorms | 66° / 44° | NW 14 to 18 mph |
| Thursday | Mostly Sunny then Chance Showers And Thunderstorms | 74° / 49° | NW 10 to 17 mph |
| Friday | Chance Showers And Thunderstorms | 74° / 47° | NW 14 to 18 mph |
| Saturday | Sunny then Slight Chance Showers And Thunderstorms | 72° / 46° | NW 13 to 18 mph |
Today's Weather - Newcastle, WY
6 AM PST
Mostly Sunny then Scattered Showers And Thunderstorms
47°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Today | Mostly Sunny then Scattered Showers And Thunderstorms | 70° / 45° | N 6 to 10 mph |
| Monday | Sunny then Slight Chance Showers And Thunderstorms | 73° / 48° | S 5 to 12 mph |
| Tuesday | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 67° / 44° | NW 6 to 16 mph |
| Wednesday | Chance Rain Showers then Chance Showers And Thunderstorms | 62° / 41° | NW 14 mph |
| Thursday | Sunny then Slight Chance Showers And Thunderstorms | 69° / 45° | NW 8 to 17 mph |
| Friday | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 70° / 43° | NW 9 to 20 mph |
| Saturday | Sunny then Slight Chance Showers And Thunderstorms | 70° / 43° | NW 12 to 17 mph |
Average Monthly High / Low (°F)
| Month | Rapid City, SD | Newcastle, WY |
|---|
| January | 38° / 14° | 37° / 13° |
| February | 39° / 16° | 40° / 15° |
| March | 47° / 23° | 49° / 23° |
| April | 57° / 32° | 58° / 32° |
| May | 67° / 43° | 67° / 42° |
| June | 76° / 52° | 77° / 51° |
| July | 85° / 59° | 86° / 58° |
| August | 85° / 58° | 85° / 56° |
| September | 74° / 47° | 75° / 46° |
| October | 60° / 35° | 61° / 33° |
| November | 47° / 24° | 46° / 22° |
| December | 37° / 15° | 36° / 12° |
Hot, Freezing, Rainy, Snowy Days: Rapid City / Newcastle
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 29 / 30 | 4 / 5 | 5 / 4 |
| February | 0 / 0 | 26 / 27 | 5 / 5 | 5 / 4 |
| March | 0 / 0 | 25 / 26 | 6 / 6 | 4 / 4 |
| April | 0 / 0 | 15 / 15 | 9 / 8 | 3 / 2 |
| May | 0 / 0 | 3 / 4 | 11 / 10 | 0 / 0 |
| June | 2 / 3 | 0 / 0 | 12 / 10 | 0 / 0 |
| July | 9 / 12 | 0 / 0 | 9 / 9 | 0 / 0 |
| August | 8 / 9 | 0 / 0 | 8 / 7 | 0 / 0 |
| September | 2 / 2 | 1 / 2 | 6 / 6 | 0 / 0 |
| October | 0 / 0 | 10 / 13 | 7 / 7 | 1 / 1 |
| November | 0 / 0 | 23 / 26 | 4 / 5 | 3 / 3 |
| December | 0 / 0 | 29 / 30 | 4 / 5 | 4 / 4 |
July is the hottest month for Rapid City with an average high temperature of 85.3°, which ranks it as about average compared to other places in South Dakota. In Rapid City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rapid City are June, September and August.
July is the hottest month for Newcastle with an average high temperature of 86.4°, which ranks it as about average compared to other places in Wyoming. In Newcastle, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Newcastle are June, September and August.
January has the coldest nighttime temperatures for Rapid City with an average of 14.2°. This is one of the warmest places in South Dakota.
December has the coldest nighttime temperatures for Newcastle with an average of 12.4°. This is warmer than most places in Wyoming.
In Rapid City, there are 22.5 days annually when the high temperature is over 90°, which is about average compared to other places in South Dakota.
In Newcastle, there are 25.6 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.
In Rapid City, there are 159.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.
In Newcastle, there are 172.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Wyoming.
In Rapid City, there are 14.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.
In Newcastle, there are 15.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wyoming.
May is the wettest month in Rapid City with 3.8 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Autumn with 38% of yearly precipitation and 6% occurs in Spring, which is the driest season. The annual rainfall of 18.2 inches in Rapid City means that it is drier than most places in South Dakota.
June is the wettest month in Newcastle with 2.9 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Autumn with 40% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 17.7 inches in Newcastle means that it is wetter than most places in Wyoming.
June is the rainiest month in Rapid City with 11.8 days of rain, and November is the driest month with only 4.0 rainy days. There are 85.4 rainy days annually in Rapid City, which is rainier than most places in South Dakota. The rainiest season is Autumn when it rains 34% of the time and the driest is Spring with only a 15% chance of a rainy day.
June is the rainiest month in Newcastle with 10.4 days of rain, and November is the driest month with only 4.6 rainy days. There are 83.0 rainy days annually in Newcastle, which is rainier than most places in Wyoming. The rainiest season is Autumn when it rains 31% of the time and the driest is Spring with only a 18% chance of a rainy day.
An annual snowfall of 38.0 inches in Rapid City means that it is about average compared to other places in South Dakota.
An annual snowfall of 41.5 inches in Newcastle means that it is less snowy than most places in Wyoming.
March is the snowiest month in Rapid City with 8.6 inches of snow, and 8 months of the year have significant snowfall.
March is the snowiest month in Newcastle with 8.0 inches of snow, and 8 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.
Reviews for Rapid City 
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 Rapid City
Reviews for Newcastle 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 Newcastle
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