Waterloo, IA

NWS NDFD forecast low temperature for Waterloo.

Every year's low on Jul 14 at Waterloo. The forecast line shows where today lands; the ringed bar is the coldest on record.

The hottest and coldest ever recorded at Waterloo in each calendar month, and for the whole 1895–2026 record — with the year each was set.

Records set or tied at Waterloo so far this year — through Jul 11.

Normal low & low by month, from Waterloo's own 1991–2020 record. Today's normal low: 63°F · forecast is +4° vs normal.

Waterloo's observed daily low for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.

Every day this year against Waterloo's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.

Each cell is one day's low at Waterloo, coloured by temperature — 132 years of record, so heat waves read as warm streaks and cold snaps as blue.

How many days a year hit a given low at Waterloo — counted through Jul 14 each year, so you can see whether 2026 is running cold. Pick a threshold:

84 days ≤32°F so far in 2026 — the 118th most in 132 years. Normal for this point: 93. Record: 108 in 1956.

A ready-to-share summary of Waterloo's outlook — post it, or link this page.