Keystone (SD) Climate by Month
The temperature in Keystone can vary quite a bit throughout the year.
Temperatures can be warm during the warmest months,
and cold during the cooler months.
It receives mid-range precipitation levels.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
Visitors to Keystone can expect significant temperature changes throughout the year. Average daytime temperatures range from a comfortable 28°C in July, the warmest time of the year, to a chilly 3°C during cooler months like February. At night, temperatures typically average around -10°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Generally, Keystone experiences moderate precipitation patterns, averaging 536 mm yearly. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, May receives high rainfall, averaging 114 mm of precipitation, recorded across 15 rainy days. In contrast, the drier season, January brings less snowfall, with 8.4 mm over 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 Keystone 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:
Yes, the months of January, February, November and December are very dry.
July has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 3°C.
May tops the wettest month list with 114 mm of rainfall.
January is the driest month with 8 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.
