Pierre Climate Trends
South Dakota · US States · 50 years of climate trend data
This page tracks how Pierre's climate has shifted over fifty years of daily measurements, warmer summers, milder winters, and changes in rainfall, rather than current conditions. For day-to-day and current weather in Pierre, see theMeteo Capital Cities, or for where this trend points next, see Meteo Future Trends. See how this pace of change ranks against every other world capitalon the Climate Shift Index.Compare its climate trend against all 195 world capitals on the full interactive map.
Data through August 4, 2026.
Frequently asked questions about Pierre's climate
How much warmer have summers in Pierre become?
The average daytime high across June, July and August rose by 0.5°C between 1976-1980 and 2021-2025. That is a five-year average at each end rather than two isolated summers, so a single exceptional heatwave or cool summer does not drive the number.
Have winters in Pierre become milder?
The average daytime high across December, January and February rose by 3.5°C between 1976-1980 and 2021-2025. In many capitals in this dataset winter is changing faster than summer, which shows up most clearly in the frost-day count below.
How many days above 30°C does Pierre get a year?
Pierre averaged 50 days a year above 30°C in 2021-2025, down from 52 in 1976-1980. This capital has fewer of them in this record, which is unusual inside a warming dataset.
How many frost days does Pierre still get?
Pierre averaged 141 frost days a year in 2021-2025, the same as 141 in 1976-1980. So the frost count has held steady here.
Is spring arriving earlier in Pierre?
Spring now starts about 1.7 weeks earlier than in 1976-1980. The start point is the first day the trailing seven-day average high crosses 12°C, a fixed in-house measure used only to compare Pierre against itself rather than against other cities.
Has the growing season in Pierre grown longer?
The growing season is about 6 days longer between 1976-1980 and 2021-2025. That is the stretch between the start of spring and the first autumn night below freezing, which is exactly the window gardens, farming and pollen seasons run inside.
Is rainfall in Pierre getting heavier?
Pierre averaged 5.2 days a year with more than 20mm of rain in 2021-2025, up from 4.2 in 1976-1980. Warmer air holds more water vapour, so the same annual rainfall increasingly arrives in shorter, harder bursts, which loads drains and water storage more than the annual total suggests.
