The PRISM 4 km climate record, all the way back to 1895 — observed
high, low and derived average temperature against the 1991–2020 normal, for
every county, climate division, state and NOAA climate region. Month-to-date and
year-to-date run live through yesterday on PRISM's own daily grids, so one modelled
dataset covers the whole record end to end. Pick a period and a level of detail; tap a state to drill in.
VARIABLEMAP DETAIL
PERIODCOLOR BYWEIGHTING
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Trends & Records
ANNUAL MEAN TEMPERATURE · 1895–PRESENT · PRISM 4 KM
Lower 48
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Day by Day
EVERY DAY · PRISM 4 KM DAILY · MEAN TEMPERATURE
Lower 48
Each square is one day's mean temperature; rows are months (newest on top) with that month's departure from the 1991–2020 normal; columns are the day of the month.