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Aloha, OR Weather
Aloha, Oregon sits at 45.4919, -122.8726. Its warmest month is July, when the day usually reaches 82F, and its coldest is December, when the night usually falls to 33F. December is the wettest, with rain on about 20 days. The hottest day in the station record is 114F on June 28, 2021, and the coldest night 3F on January 13, 2017. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Aloha weather
Aloha sits at 45.4919, -122.8726 and covers about 7.298 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Aloha
Aloha is warmest in July, when the day usually reaches 82F, and coldest in December, when the night usually falls to 33F. December is the wettest month, with rain on about 20 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
January
47F
34F
19
February
50F
34F
16
March
55F
36F
18
April
61F
39F
16
May
68F
45F
12
June
73F
49F
9
July
82F
52F
3
August
82F
52F
3
September
76F
48F
8
October
63F
42F
15
November
52F
37F
19
December
46F
33F
20
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Portland-Hillsboro Ap station 5.6 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Aloha weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Aloha: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Aloha weather records
In 30,590 days of observations Aloha has been as hot as 114F and as cold as 3F. Not averages: the actual days.
Hottest day
114F
June 28, 2021
Coldest night
3F
January 13, 2017
Wettest day
2.58 in
January 1, 2009
Biggest snow
10.0 in
February 12, 1995
NOAA GHCN daily station records, observed 1998 to 2025: temperature at the Portland-Hillsboro Ap station, 5.6 miles away; snowfall at the Portland Kgw-Tv station, 9.1 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Aloha weather
Common questions
What is the weather usually like in Aloha, OR?
Aloha is warmest in July, when the day usually reaches 82F, and coldest in December, when the night usually falls to 33F. Rain falls on roughly 158 days a year, most often in December. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Aloha, OR?
About 158 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. December is the wettest month with rain on about 20 of its days, and July the driest with about 3.
What is the hottest it has ever been in Aloha, OR?
The hottest day measured for Aloha reached 114F on June 28, 2021, and the coldest night 3F on January 13, 2017. Both are real NOAA station measurements from the GHCN daily archive, observed 1998 to 2025, at the Portland-Hillsboro Ap station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Aloha, OR?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Aloha forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.