Hillsboro, OR

NWS NDFD forecast low temperature for Hillsboro.

Every year's low on each of the next 7 forecast dates at Hillsboro — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.

The hottest and coldest ever recorded at Hillsboro in each calendar month, and for the whole 1929–2026 record — with the year each was set.

Records set or tied at Hillsboro so far this year — through Aug 30.

Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.

Normal low & low by month, from Hillsboro's own 1991–2020 record. Today's normal low: 50°F · forecast is -1° vs normal.

Hillsboro'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 Hillsboro'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 Hillsboro, coloured by temperature — 98 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 Hillsboro — counted through Sep 3 each year, so you can see whether 2026 is running cold. Pick a threshold:

30 days ≤32°F so far in 2026 — the 71st most in 98 years. Normal for this point: 38. Record: 66 in 2009.

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