Photo: Tedder · CC BY 3.0Terrebonne is among the driest of U.S. towns: 10 inches of precipitation a year
In July the day’s top temperature is typically 87°. A year here swings 63° from midwinter lows to midsummer highs. Its January nights stay gentler than in 64% of U.S. towns. Comfortable outdoor weather, highs of 76–77°, belongs to June and September.
A year in Terrebonne at a glance
Each month’s typical high and low, and what it brings.
What stands out about Terrebonne’s climate
Compared with towns across the U.S., with Terrebonne’s place in Oregon beside it.
What a year in Terrebonne feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 98 frost-free days a year
In half of years the last 32° night comes by June 9 and the first by September 14. Frost and day counts come from NOAA’s station at Redmond Roberts Fld, OR, 7 miles from the town’s center, 210 ft higher.
The 2023 USDA map puts Terrebonne’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 9 inches of snow a winter
Snow, measured at Prineville, OR, falls mostly in February. Precipitation (rain plus melted snow) adds up to 10 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 73 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Terrebonne
95% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Redmond Roberts Fld, OR.
Living with Terrebonne’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
98 frost-free days in zone 6b. The last frost comes by Jun 9 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 14.
Months with highs of 62–84° and lows of 40° or more: June and September.
Parks & trails →Of the yearly building losses FEMA expects in Terrebonne from natural hazards, avalanches are the largest share (50%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Terrebonne and similar climates
TownRatings has no climate map of the towns around Terrebonne yet.
Climates most like Terrebonne’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Terrebonne, OR | 25° | 87° | 10" | 8.8" |
| Indian Hills, NV | 25° | 86° | 14" | 14" |
| Connell, WA | 26° | 89° | 9" | 14" |
| Silver City, NM | 26° | 87° | 16" | 13" |
| Hamilton, MT | 20° | 86° | 13" | 17" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
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°).
A smaller shift than in 67% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Terrebonne compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Terrebonne’s place among Oregon’s.
Terrebonne weather by month
Highs, lows and precipitation from NOAA’s grid at Terrebonne’s center; snow, wet days and snow on the ground from Prineville, OR. 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" | 0.0" | 7 | 0 | 48° – 58° |
| June | 76° | 43° | 0.8" | 0.0" | 5 | 0 | 55° – 68° |
| July | 87° | 49° | 0.4" | 0.0" | 2 | 0 | 59° – 72° |
| August | 86° | 47° | 0.4" | 0.0" | 2 | 0 | 62° – 71° |
| September | 77° | 41° | 0.4" | 0.0" | 3 | 0 | 56° – 63° |
| October | 64° | 34° | 0.8" | 0.0" | 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 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 23° to 40°. September is the most reliable, staying within 7°.
Where Terrebonne’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Terrebonne’s center.
- Snow: Prineville, OR.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Redmond Roberts Fld, OR, 7 miles from the town’s center, 210 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Terrebonne’s climate
What is the weather like in Terrebonne?
A typical July afternoon reaches 87°, a January night drops to 25°, and about 9 inches of snow falls in a normal winter. Milder January nights than 64% of U.S. towns; hotter July afternoons than 61% of U.S. towns.
How cold does it get in Terrebonne in winter?
December nights average 24°. About 181 nights a year reach 32° or below and 3 reach 0° or below. In the coldest December of the last 30 years the month averaged 26°.
How much snow does Terrebonne get?
About 8.8 inches in a normal winter at Prineville, OR, most of it in February, with snow on the ground about 9 days a year.
How hot does it get in Terrebonne?
July, with a typical high of 87° and a low of 49°. About 32 days a year reach 90° and 3 reach 100° (Redmond Roberts Fld, OR).
When is the first and last frost in Terrebonne?
In half of years the last spring frost (32°) comes by June 9 and the first fall frost by September 14, about 98 frost-free days, at Redmond Roberts Fld, OR.
What growing zone is Terrebonne in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Terrebonne?
By one simple rule (highs of 62–84° and lows of 40° or more), June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Terrebonne getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 67% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Terrebonne.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.