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Granite, OR Weather
Granite, Oregon sits at 44.8103, -118.4192. Its warmest month is July, when the day usually reaches 78F, and its coldest is December, when the night usually falls to 20F. December is the wettest, with rain on about 15 days. The hottest day in the station record is 99F on July 12, 2002, and the coldest night -26F on December 21, 1990. 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 Granite weather
Granite sits at 44.8103, -118.4192 and covers about 0.372 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 Granite
Granite is warmest in July, when the day usually reaches 78F, and coldest in December, when the night usually falls to 20F. December is the wettest month, with rain on about 15 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
35F
21F
14
February
38F
22F
12
March
44F
26F
14
April
49F
29F
11
May
59F
35F
9
June
66F
40F
6
July
78F
46F
3
August
78F
46F
3
September
70F
41F
3
October
55F
33F
7
November
40F
26F
12
December
33F
20F
15
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Gold Center station 6.4 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.
Granite weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Granite: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Granite weather records
In 42,003 days of observations Granite has been as hot as 99F and as cold as -26F. Not averages: the actual days.
Hottest day
99F
July 12, 2002
Coldest night
-27F
December 21, 1990
Wettest day
2.40 in
May 20, 2020
NOAA GHCN daily station records, observed 1980 to 2025: temperature at the Gold Center station, 6.4 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 Granite weather
Common questions
What is the weather usually like in Granite, OR?
Granite is warmest in July, when the day usually reaches 78F, and coldest in December, when the night usually falls to 20F. Rain falls on roughly 109 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 Granite, OR?
About 109 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 15 of its days, and July the driest with about 3.
What is the hottest it has ever been in Granite, OR?
The hottest day measured for Granite reached 99F on July 12, 2002, and the coldest night -26F on December 21, 1990. Both are real NOAA station measurements from the GHCN daily archive, observed 1980 to 2025, at the Gold Center station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Granite, 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 Granite 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.