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Climate in Glasgow · NOAA 1991–2020 normals

Hardly any U.S. towns see fresher July days than Glasgow

The depth of winter brings overnight lows near 40°. The year changes little: the coldest month’s nights and the warmest month’s afternoons are only 28° apart. Precipitation is plentiful here, more than falls on almost every U.S. town. The heating season runs November to April: each of those months averages under 50°.

Milder January nights than 88% of U.S. towns#7Mildest winters  of 136 in OR
Cooler July afternoons than all but 41 U.S. towns#6Coolest summers  of 136 in OR
All OR rankings →

A year in Glasgow at a glance

Each month’s typical high and low, and what it brings.

Jan53°40°
Feb54°40° Last frost ~Feb 21
Mar55°40°
Apr57°43°
May61°46°
Jun64°50°
Jul67°52°
Aug68°52°
Sep67°50°
Oct63°46°
Nov now57°43°
Dec53°39° First frost ~Dec 9Wettest

What stands out about Glasgow’s climate

Compared with towns across the U.S., with Glasgow’s place in Oregon beside it.

A normal year

What a year in Glasgow feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
53° / 40°
Snow is rare
Spring
58° / 43°
Last frost around Feb 21
Summer
66° / 51°
90° days are rare
Fall
62° / 46°
First frost around Dec 9
Best months to be outsideJunJulAugSepOctHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 294 frost-free days a year

In half of years the last 32° night comes by February 21 and the first by December 9. Frost and day counts come from NOAA’s station at North Bend Rgnl Airport, 3.0 miles from the town’s center, 150 ft lower.

10
nights at or below 32° in a normal year
5th fewest of 136 in Oregon
Fewer freezing nights than 91% of U.S. towns
0
nights at or below 0°
None in a normal year
<1
days that reach 90°
7th fewest of 136 in Oregon
Fewer 90° days than all but 100 U.S. towns
0
days that reach 100°
None in a normal year
9aUSDA zone
Plant hardiness zone 9a

The 2023 USDA map puts Glasgow’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 24°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

3
JFMAMJJASOND
Rain & snow

About 64 inches of rain a year

December is the wettest month and July the driest. Rain falls on about 159 days a year. Snow is rare: about 0.2" in a normal year at North Bend Rgnl Airport, so most winters see none.

64"
Rain + melted snow a year
13th wettest of 136 in Oregon
Wetter than all but 109 U.S. towns
0.2"
Snow in a normal winter
Less snow than 83% of U.S. towns

Rain + melted snow by month

Inches of water

11.5"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Glasgow

Nearly all of the work is heating: a normal year has almost no cooling days. Months averaging under 55° run from October through May.

4,369 heating degree daysLess heating than 68% of U.S. towns
8 cooling degree daysLess cooling than all but 51 U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at North Bend Rgnl Airport.

Living here

Living with Glasgow’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

294 frost-free days in zone 9a. The last frost comes by Feb 21 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 9.

Get outside

Months with highs of 62–84° and lows of 40° or more: June, July, August, September and October.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Glasgow from natural hazards, earthquakes are the largest share (49%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door & far away

Glasgow and similar climates

TownRatings has no climate map of the towns around Glasgow yet.

Climates most like Glasgow’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.

TownJan. lowJuly highPrecip.Snow
Glasgow, OR40°67°64"0.2"
Fortuna, CA42°70°55"0.7"
Aberdeen, WA37°68°80"0.5"
Nantucket, MA26°76°44"25"
Boone, NC24°79°58"26"

Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.

Then and now

Warmer than it used to be

The last 30 years in Glasgow averaged 1.8° warmer than the 1900s. The biggest change is in January (+3.3°).

+1.8°1991–2020 vs. 1901–2000

A bigger shift than in 78% of U.S. towns.

Winter+2.2°now 47°, was 44°
Spring+1.7°now 50°, was 49°
Summer+1.7°now 59°, was 57°
Fall+1.5°now 54°, was 53°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How Glasgow compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Glasgow’s place among Oregon’s.

Summer heat67° July high
Cooler July afternoons than all but 41 U.S. towns6th coolest of 136 in Oregon
Winter cold40° January low
Milder January nights than 88% of U.S. towns7th mildest of 136 in Oregon
Precipitation64" a year
Wetter than all but 109 U.S. towns13th wettest of 136 in Oregon
Snow0.2" a winter
Less snow than 83% of U.S. townsNot ranked: under an inch a year
Hot days<1 days at 90°+
Fewer 90° days than all but 100 U.S. towns7th fewest of 136 in Oregon
Freezing nights10 a year
Fewer freezing nights than 91% of U.S. towns5th fewest of 136 in Oregon
Growing season294 frost-free days
A longer frost-free season than 97% of U.S. towns3rd longest of 133 in Oregon
Month by month

Glasgow weather by month

Highs, lows and precipitation from NOAA’s grid at Glasgow’s center; snow, wet days and snow on the ground from North Bend Rgnl Airport. 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January53°40°9.8"0.0"19043° – 51°
February54°40°7.6"0.0"18042° – 52°
March55°40°7.9"0.0"19044° – 52°
April57°43°5.7"0.0"17047° – 54°
May61°46°3.3"0.0"12050° – 58°
June64°50°1.8"0.0"9053° – 59°
July67°52°0.4"0.0"3056° – 62°
August68°52°0.5"0.0"4058° – 63°
September67°50°1.7"0.0"6056° – 62°
October63°46°4.8"0.0"13052° – 59°
November57°43°9.0"0.0"19044° – 53°
December53°39°11.5"0.2"20041° – 50°
Year60°45°64.1"0.2"1590
Year to year

How much a month can swing

A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 42° to 52°. August is the most reliable, staying within 5°.

Coldest to warmest month in 30 yearsNormal
Sources

Where Glasgow’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 Glasgow’s center.
  • Snow: North Bend Rgnl Airport.
  • Frost, freezing nights, 90° and 100° days, heating and cooling: North Bend Rgnl Airport, 3.0 miles from the town’s center, 150 ft lower; 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 Glasgow’s climate

What is the weather like in Glasgow?

A typical July afternoon reaches 67°, a January night drops to 40°, and snow is almost unheard of. Milder January nights than 88% of U.S. towns; cooler July afternoons than all but 41 U.S. towns.

How cold does it get in Glasgow in winter?

December nights average 39°. About 10 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 41°.

How much snow does Glasgow get?

About 0.2 inches in a normal winter at North Bend Rgnl Airport, so most winters see none.

How hot does it get in Glasgow?

July, with a typical high of 67°. 90° days are rare: none in a normal year at North Bend Rgnl Airport.

When is the first and last frost in Glasgow?

In half of years the last spring frost (32°) comes by February 21 and the first fall frost by December 9, about 294 frost-free days, at North Bend Rgnl Airport.

What growing zone is Glasgow in?

Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 24°.

What is the best time of year to visit Glasgow?

By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Is Glasgow getting warmer?

Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 78% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in Glasgow.

Town Square →
Ask your neighbors

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.