Rapid City (SD) Climate by Month
The climate in Rapid City is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to cold in the cooler months.
It receives a reasonable amount of rain/snowfall.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
In Rapid City, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 30°C in July. In December, the coolest month of the year, temperatures drop to a chilly 3°C. At night, expect cooler temperatures, averaging -9°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
On average, Rapid City receives a reasonable amount of rain/snowfall, with an annual precipitation of 516 mm. Rapid City can be quite wet during May, receiving approximately 112 mm of precipitation over 14 rainy days. In contrast January, experiences much drier conditions, with 6.6 mm of snowfall, spread across 6 snowy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
The best time of year to visit Rapid City in the United States of America
During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
Yes, the months of January, February, November and December are very dry.
July has an average maximum temperature of 30°C and is the warmest month of the year.
The coldest month is December with an average maximum temperature of 3°C.
May tops the wettest month list with 112 mm of rainfall.
January is the driest month with 7 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
