Photo: Nheyob · CC BY-SA 4.0Summer arrives softly in Glenmont, cooler than in 72% of U.S. towns
On a normal January night the air cools to about 19°. In January, nights here are colder than in 65% of U.S. towns. Decade by decade the climate has edged up, 1.4° above 1901–2000. Plan time outside from May to October, when highs sit at 64–83°.
A year in Glenmont at a glance
Each month’s typical high and low, and what it brings.
What stands out about Glenmont’s climate
Compared with towns across the U.S., with Glenmont’s place in Ohio beside it.
What a year in Glenmont feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 164 frost-free days a year
In half of years the last 32° night comes by May 2 and the first by October 14. Frost and day counts come from NOAA’s station at Millersburg, OH, 9 miles from the town’s center, 110 ft lower.
The 2023 USDA map puts Glenmont’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −7°. 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 25 inches of snow a winter
Snow, measured at Greer, OH, falls mostly in January. Precipitation (rain plus melted snow) adds up to 42 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 111 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Glenmont
90% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Millersburg, OH.
Living with Glenmont’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
164 frost-free days in zone 6a. The last frost comes by May 2 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 14.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Glenmont from natural hazards, river flooding is the largest share (76%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Glenmont and similar climates
TownRatings has no climate map of the towns around Glenmont yet.
Climates most like Glenmont’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 |
|---|---|---|---|---|
| Glenmont, OH | 19° | 83° | 42" | 25" |
| Lebanon, IN | 18° | 83° | 42" | 22" |
| Bloomsburg, PA | 19° | 84° | 43" | 29" |
| Calumet City, IL | 18° | 84° | 39" | 28" |
| Ghent, NY | 16° | 84° | 42" | 31" |
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 Glenmont averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.7°).
A bigger shift than in 50% 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 Glenmont compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Glenmont’s place among Ohio’s.
Glenmont weather by month
Highs, lows and precipitation from NOAA’s grid at Glenmont’s center; snow, wet days and snow on the ground from Greer, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 35° | 19° | 3.1" | 9.4" | 11 | 18° – 38° |
| February | 39° | 21° | 2.5" | 5.7" | 10 | 15° – 39° |
| March | 48° | 29° | 3.3" | 3.2" | 10 | 32° – 51° |
| April | 62° | 38° | 3.9" | 0.2" | 10 | 44° – 55° |
| May | 72° | 48° | 4.2" | 0.0" | 11 | 53° – 67° |
| June | 80° | 57° | 4.7" | 0.0" | 11 | 64° – 71° |
| July | 83° | 61° | 4.1" | 0.0" | 9 | 67° – 76° |
| August | 82° | 59° | 3.6" | 0.0" | 8 | 66° – 75° |
| September | 75° | 52° | 3.3" | 0.0" | 7 | 60° – 68° |
| October | 64° | 41° | 3.1" | 0.0" | 8 | 49° – 58° |
| November | 51° | 32° | 2.9" | 0.6" | 8 | 35° – 47° |
| December | 40° | 24° | 3.1" | 5.4" | 10 | 20° – 43° |
| Year | 61° | 40° | 41.9" | 24.5" | 111 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 15° to 39°. June is the most reliable, staying within 7°.
Where Glenmont’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 Glenmont’s center.
- Snow: Greer, OH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Millersburg, OH, 9 miles from the town’s center, 110 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 Glenmont’s climate
What is the weather like in Glenmont?
A typical July afternoon reaches 83°, a January night drops to 19°, and about 25 inches of snow falls in a normal winter. Colder January nights than 65% of U.S. towns; cooler July afternoons than 72% of U.S. towns.
How cold does it get in Glenmont in winter?
January nights average 19°. About 141 nights a year reach 32° or below and 7 reach 0° or below. In the coldest January of the last 30 years the month averaged 18°.
How much snow does Glenmont get?
About 25 inches in a normal winter at Greer, OH, most of it in January.
How hot does it get in Glenmont?
July, with a typical high of 83° and a low of 61°. About 12 days a year reach 90° (Millersburg, OH).
When is the first and last frost in Glenmont?
In half of years the last spring frost (32°) comes by May 2 and the first fall frost by October 14, about 164 frost-free days, at Millersburg, OH.
What growing zone is Glenmont in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −7°.
What is the best time of year to visit Glenmont?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Glenmont getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 50% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Glenmont.
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.