Terrebonne, OR climate
Terrebonne has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 87°, a January night drops to 25°, and about 9 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Terrebonne feels like
Winter
Spring
Summer
Fall
Terrebonne weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 43° | 25° | 1.2" | 1.8" | 8 | 3 | 23° – 40° |
| February | 47° | 26° | 0.9" | 3.2" | 7 | 3 | 28° – 43° |
| March | 54° | 29° | 0.8" | 0.9" | 8 | 1 | 35° – 47° |
| April | 60° | 32° | 0.9" | 0.3" | 8 | 0 | 41° – 52° |
| May | 69° | 38° | 1.2" | 0 | 7 | 0 | 48° – 58° |
| June | 76° | 43° | 0.8" | 0 | 5 | 0 | 55° – 68° |
| July | 87° | 49° | 0.4" | 0 | 2 | 0 | 59° – 72° |
| August | 86° | 47° | 0.4" | 0 | 2 | 0 | 62° – 71° |
| September | 77° | 41° | 0.4" | 0 | 3 | 0 | 56° – 63° |
| October | 64° | 34° | 0.8" | 0 | 6 | 0 | 43° – 54° |
| November | 50° | 28° | 1.1" | 1.1" | 8 | 1 | 33° – 45° |
| December | 41° | 24° | 1.4" | 1.5" | 8 | 1 | 26° – 37° |
| Year | 63° | 35° | 10.2" | 8.8" | 73 | 9 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Terrebonne
Terrebonne gets 10 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 73 days a year. Snow covers the ground about 9 days of the year.
About 98 frost-free days a year
In half of years the last 32° night comes by June 9 and the first one by September 14. That leaves about 98 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Terrebonne
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Terrebonne, 95% of that work is heating and 5% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Terrebonne compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Terrebonne averaged 1.1° warmer than the 1900s. The biggest change is in January (+3.3°). The shift is smaller than in 58% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Terrebonne’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 23° to 40°. September is the most reliable, staying within 7°.
Common questions about Terrebonne’s climate
What is the coldest month in Terrebonne?
December, with a typical high of 41° and a low of 24°.
What is the hottest month in Terrebonne?
July, with a typical high of 87° and a low of 49°. About 32 days a year reach 90°.
How much snow does Terrebonne get?
About 9 inches in a normal winter, most of it in February.
When is the first frost in Terrebonne?
In half of years the first 32° night comes by September 14, and the last spring frost by June 9.
What is the rainiest month in Terrebonne?
December, with 1.4 inches of rain and melted snow. The year totals 10 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Terrebonne itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Prineville, OR (17 mi, snow) and Redmond Roberts Fld, OR (7 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.