Historical weather records from the Northern Plains — ND, SD, MN, Manitoba, Saskatchewan.
Understanding the data
Stations vary in how complete their records are. A year with zero extreme days (e.g., 0 days below −20°F) may mean it never reached that threshold — or it may mean the station didn't record data on the days it did. Gaps, equipment changes, and station moves can all affect what appears in the record.
The "Record span" in At a Glance shows the date range of available data. Use it as a rough guide to how much of each year was likely observed.
Click a marker to select that station
At a Glance
Long-Term Temperature Trends
Annual average temperature and 10-year rolling average.
Freeze Dates & Growing Season
Last spring freeze, first fall freeze, and frost-free season length.
Precipitation Trends
Annual precipitation and heavy rainfall days (>1 inch).
Extreme Heat & Cold Days
Days at or above 90°F and days at or below −20°F per year. Zero can mean none occurred or that data wasn't recorded.
Temperature by Decade
Average temperature over each 10-year period. Helps compare long-term trends.