Photo: Acroterion · CC BY-SA 4.0Neither notably warm, cold, wet nor dry, Wilson-Conococheague sits near the middle of U.S. towns
Midsummer highs settle at about 88°. Its July heat outdoes that of 66% of U.S. towns. Warming shows here too: 1.6° more than in 1901–2000, led by December. Garden chairs stay out from April to June and September to October, the months with highs of 66–83°.
A year in Wilson-Conococheague at a glance
Each month’s typical high and low, and what it brings.
What stands out about Wilson-Conococheague’s climate
Compared with towns across the U.S., with Wilson-Conococheague’s place in Maryland beside it.
What a year in Wilson-Conococheague feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 209 frost-free days a year
In half of years the last 32° night comes by April 7 and the first by November 4. Frost and day counts come from NOAA’s station at Hagerstown Washington Co Airport, 6 miles from the town’s center, 250 ft higher.
The 2023 USDA map puts Wilson-Conococheague’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 3°. 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 31 inches of snow a winter
Snow, measured at Chambersburg 1 Ese, PA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 40 inches a year; May is the wettest month and February the driest. Rain or snow falls on about 117 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Wilson-Conococheague
79% of the work is heating. Months averaging under 55° run from November 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 Hagerstown Washington Co Airport.
Living with Wilson-Conococheague’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
209 frost-free days in zone 7a. The last frost comes by Apr 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 4.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Wilson-Conococheague from natural hazards, river flooding is the largest share (54%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Wilson-Conococheague and similar climates
TownRatings has no climate map of the towns around Wilson-Conococheague yet.
Climates most like Wilson-Conococheague’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 |
|---|---|---|---|---|
| Wilson-Conococheague, MD | 23° | 88° | 40" | 31" |
| Obetz, OH | 22° | 86° | 41" | 28" |
| Parkville, MO | 20° | 88° | 39" | 18" |
| Fort Wright, KY | 24° | 87° | 45" | 23" |
| Chatham, IL | 20° | 86° | 39" | 22" |
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 Wilson-Conococheague averaged 1.6° warmer than the 1900s. The biggest change is in December (+2.9°).
A bigger 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 Wilson-Conococheague compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Wilson-Conococheague’s place among Maryland’s.
Wilson-Conococheague weather by month
Highs, lows and precipitation from NOAA’s grid at Wilson-Conococheague’s center; snow, wet days and snow on the ground from Chambersburg 1 Ese, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 41° | 23° | 2.7" | 10.0" | 10 | 11 | 23° – 40° |
| February | 44° | 24° | 2.2" | 8.0" | 9 | 11 | 24° – 43° |
| March | 53° | 31° | 3.4" | 6.0" | 10 | 5 | 37° – 52° |
| April | 66° | 41° | 3.5" | 0.3" | 11 | 0 | 49° – 59° |
| May | 75° | 51° | 4.0" | 0.0" | 12 | 0 | 58° – 69° |
| June | 83° | 59° | 3.7" | 0.0" | 11 | 0 | 67° – 74° |
| July | 88° | 64° | 3.7" | 0.0" | 10 | 0 | 71° – 79° |
| August | 86° | 62° | 3.3" | 0.0" | 9 | 0 | 69° – 77° |
| September | 79° | 55° | 4.0" | 0.0" | 9 | 0 | 64° – 71° |
| October | 67° | 43° | 3.1" | 0.0" | 9 | 0 | 52° – 62° |
| November | 55° | 34° | 2.9" | 1.0" | 8 | 0 | 38° – 50° |
| December | 44° | 27° | 3.3" | 5.5" | 9 | 5 | 26° – 45° |
| Year | 65° | 43° | 39.6" | 30.8" | 117 | 31 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 26° to 45°. September is the most reliable, staying within 7°.
Where Wilson-Conococheague’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 Wilson-Conococheague’s center.
- Snow: Chambersburg 1 Ese, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Hagerstown Washington Co Airport, 6 miles from the town’s center, 250 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 Wilson-Conococheague’s climate
What is the weather like in Wilson-Conococheague?
A typical July afternoon reaches 88°, a January night drops to 23°, and about 31 inches of snow falls in a normal winter. Milder January nights than 55% of U.S. towns; hotter July afternoons than 66% of U.S. towns.
How cold does it get in Wilson-Conococheague in winter?
January nights average 23°. About 93 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 23°.
How much snow does Wilson-Conococheague get?
About 31 inches in a normal winter at Chambersburg 1 Ese, PA, most of it in January, with snow on the ground about 31 days a year.
How hot does it get in Wilson-Conococheague?
July, with a typical high of 88° and a low of 64°. About 24 days a year reach 90° (Hagerstown Washington Co Airport).
When is the first and last frost in Wilson-Conococheague?
In half of years the last spring frost (32°) comes by April 7 and the first fall frost by November 4, about 209 frost-free days, at Hagerstown Washington Co Airport.
What growing zone is Wilson-Conococheague in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 3°.
What is the best time of year to visit Wilson-Conococheague?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Wilson-Conococheague getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 67% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Wilson-Conococheague.
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.