2025 Compare Climate & Weather:
Rapid City, SD vs Williams, AZ

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Highlights

On average, there are 266 sunny days per year in Williams. Rapid City averages 226 sunny days per year. The US average is 205 sunny days.

Williams, Arizona gets 22.2 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.

Williams averages 74.3 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

Williams, Arizona
Summer High: the July high is around 84.6 degrees
Winter Low: the January low is 21.9
Rain: averages 22.2 inches of rain a year
Snow: averages 74.3 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
Williams

The annual BestPlaces Comfort Index for Williams is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

7.3 / 10
June, September and August are the most pleasant months in Williams, while January and December are the least comfortable months.

Rapid City

The 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

4 PM PST

Chance Showers And Thunderstorms

74°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonChance Showers And Thunderstorms75° / 48°SE 13 mph
SundaySunny then Chance Showers And Thunderstorms80° / 53°S 9 to 22 mph
MondaySunny then Chance Showers And Thunderstorms77° / 43°S 10 to 17 mph
TuesdayChance Rain Showers54° / 41°N 15 mph
WednesdayMostly Sunny then Slight Chance Rain Showers63° / 45°E 6 to 13 mph
ThursdaySunny76° / 50°S 8 to 15 mph
FridaySunny then Slight Chance Showers And Thunderstorms76° / 49°N 8 to 13 mph
Today's Weather - Williams, AZ

4 PM PST

Chance Showers And Thunderstorms

62°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonChance Showers And Thunderstorms66° / 39°S 13 mph
SundayChance Rain Showers56° / 33°S 12 to 17 mph
MondaySnow Showers39° / 34°SW 10 mph
TuesdayShowers And Thunderstorms45° / 32°SW 5 to 8 mph
WednesdayChance Rain Showers58° / 35°NW 5 to 8 mph
ThursdaySunny66° / 41°SW 2 to 7 mph
FridayMostly Sunny71° / 44°S 3 to 7 mph
Average Monthly High / Low (°F)
MonthRapid City, SDWilliams, AZ
January38° / 14°44° / 22°
February39° / 16°48° / 24°
March47° / 23°54° / 27°
April57° / 32°62° / 33°
May67° / 43°72° / 40°
June76° / 52°82° / 48°
July85° / 59°85° / 55°
August85° / 58°82° / 54°
September74° / 47°76° / 47°
October60° / 35°65° / 37°
November47° / 24°54° / 28°
December37° / 15°45° / 21°
Hot, Freezing, Rainy, Snowy Days: Rapid City / Williams
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 029 / 294 / 75 / 5
February0 / 026 / 255 / 75 / 5
March0 / 025 / 256 / 74 / 4
April0 / 015 / 149 / 43 / 2
May0 / 03 / 511 / 30 / 0
June2 / 30 / 112 / 30 / 0
July9 / 50 / 09 / 100 / 0
August8 / 10 / 08 / 120 / 0
September2 / 01 / 16 / 70 / 0
October0 / 010 / 87 / 51 / 0
November0 / 023 / 214 / 53 / 2
December0 / 029 / 284 / 64 / 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 Williams with an average high temperature of 84.6°, which ranks it as one of the coolest places in Arizona. In Williams, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Williams are September, August and June.
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 Williams with an average of 21.2°. This is colder than most places in Arizona.

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 Williams, there are 8.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

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 Williams, there are 155.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arizona.

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 Williams, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Arizona.

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.


August is the wettest month in Williams with 3.3 inches of rain, and the driest month is June with 0.4 inches. The wettest season is Spring with 31% of yearly precipitation and 18% occurs in Summer, which is the driest season. The annual rainfall of 22.2 inches in Williams means that it is one of the wettest places in Arizona.

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.

August is the rainiest month in Williams with 12.3 days of rain, and June is the driest month with only 2.5 rainy days. There are 75.3 rainy days annually in Williams, which is one of the rainiest places in Arizona. The rainiest season is Autumn when it rains 33% of the time and the driest is Summer with only a 19% 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 74.3 inches in Williams means that it is one of the snowiest places in Arizona.
March is the snowiest month in Rapid City with 8.6 inches of snow, and 8 months of the year have significant snowfall.

January is the snowiest month in Williams with 19.5 inches of snow, and 7 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
Jill · Sherman Oaks, CA
re:
Over 16 years ago

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

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

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

   |    Reply

Start Your Review of Rapid City

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Reviews for Williams    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

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

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

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

   |    Reply

Start Your Review of Williams

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Zips In Rapid City, South Dakota
57701, 57702
Zips In WILLIAMS, ARIZONA
86046
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