Portland/Hillsboro Arpt
Weather station · 45.5°N 123.0°W · 62 m above sea level
ICAO KHIOStation data since 1998
Record high
31.1°C
in 2002
Record low
1.7°C
in 2000
Average high
23.0°C
all years on record
8.3°C short of the record for 23 September
Today’s high 22.8°C against 31.1°C in 2002. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
45.6°C
- Date
- Monday, 28 June 2021
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Portland/Hillsboro Arpt, United States
- Position
- 45.55°N 122.96°W · 62 m
Highest highest in available records since 1998. Source: NOAA GHCN-Daily.
All-time record low
−16.0°C
- Date
- Friday, 13 January 2017
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Portland/Hillsboro Arpt, United States
- Position
- 45.55°N 122.96°W · 62 m
Highest and lowest lowest in available records since 1998. Source: NOAA GHCN-Daily.
Where Portland/Hillsboro Arpt is
45.55°N 122.96°W
Portland/Hillsboro Arpt
Ground · satellite
Land surface temperature for 2026-09-22, from NASA GIBS. This is the temperature of the ground seen from orbit, not the air, and it is never ranked against air readings. Cloud hides the ground, so gaps are unread rather than guessed.
View more on Google Maps- 1
Today is already hotter than 72% of all days recorded here since 1998.
From our dataToday's high against every day recorded at this station since 1998. - 2
Between its coldest night and its hottest day, this place has swung 61.6°C.
From our dataRecord high 45.6°C against record low −16.0°C. - 3
At 08:53 UTC this morning it was 8.9°C. By 00:53 UTC it was 22.8°C. The night never stood a chance.
From our dataToday so far at this station, in local time.
New facts every day. Report an error.
Every year on record
1998 to 2026
Annual average · °C
Trend over 27 years with data: +0.56 °C per decade
Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.
Records by month
Jan
17.8°
−16.0°
Feb
18.9°
−8.8°
Mar
26.1°
−6.6°
Apr
32.2°
−3.8°
May
34.4°
−1.1°
Jun
45.6°
1.7°
Jul
42.2°
3.9°
Aug
41.7°
3.3°
Sep
37.8°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 22.8°C | 00:53 UTC | 8.9°C | 08:53 UTC |
| 2026-09-22 | 22.2°C | 22:53 UTC | 12.8°C | 14:53 UTC |
Nearby stations
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1998 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |