Weather without surprises: Trego-Rohrersville Station keeps close to the norm for U.S. towns
Deep winter brings January lows near 23°. Decade by decade the climate has edged up, 1.5° above 1901–2000. Garden chairs stay out from April to June and September to October, the months with highs of 65–82°.
A year in Trego-Rohrersville Station at a glance
Each month’s typical high and low, and what it brings.
What stands out about Trego-Rohrersville Station’s climate
Compared with towns across the U.S., with Trego-Rohrersville Station’s place in Maryland beside it.
What a year in Trego-Rohrersville Station feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 175 frost-free days a year
In half of years the last 32° night comes by April 26 and the first by October 18. Frost and day counts come from NOAA’s station at Sharpsburg 5 S, MD, 3 miles from the town’s center, 240 ft lower.
The 2023 USDA map puts Trego-Rohrersville Station’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 4°. 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 42 inches of rain a year
May is the wettest month and February the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Trego-Rohrersville Station
86% of the work is heating, so the furnace matters far more than the air conditioner. 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 Sharpsburg 5 S, MD.
Living with Trego-Rohrersville Station’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
175 frost-free days in zone 7a. The last frost comes by Apr 26 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 18.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Trego-Rohrersville Station from natural hazards, river flooding is the largest share (60%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Trego-Rohrersville Station and similar climates
TownRatings has no climate map of the towns around Trego-Rohrersville Station yet.
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 Trego-Rohrersville Station averaged 1.5° warmer than the 1900s. The biggest change is in December (+2.8°).
A bigger shift than in 60% 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 Trego-Rohrersville Station compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Trego-Rohrersville Station’s place among Maryland’s.
Trego-Rohrersville Station weather by month
Highs, lows and precipitation from NOAA’s grid at Trego-Rohrersville Station’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 40° | 23° | 2.9" | 23° – 40° |
| February | 44° | 26° | 2.5" | 25° – 43° |
| March | 53° | 32° | 3.7" | 37° – 52° |
| April | 65° | 42° | 3.5" | 49° – 59° |
| May | 74° | 51° | 4.4" | 58° – 69° |
| June | 82° | 60° | 3.8" | 67° – 74° |
| July | 86° | 64° | 4.0" | 71° – 79° |
| August | 84° | 62° | 3.3" | 69° – 77° |
| September | 78° | 55° | 4.4" | 64° – 70° |
| October | 66° | 44° | 3.3" | 52° – 62° |
| November | 54° | 35° | 3.0" | 38° – 50° |
| December | 44° | 28° | 3.5" | 27° – 45° |
| Year | 64° | 43° | 42.0" |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 27° to 45°. September is the most reliable, staying within 7°.
Where Trego-Rohrersville Station’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 Trego-Rohrersville Station’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sharpsburg 5 S, MD, 3 miles from the town’s center, 240 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 Trego-Rohrersville Station’s climate
What is the weather like in Trego-Rohrersville Station?
A typical July afternoon reaches 86°, a January night drops to 23°. Milder January nights than 58% of U.S. towns; hotter July afternoons than 58% of U.S. towns.
How cold does it get in Trego-Rohrersville Station in winter?
January nights average 23°. About 126 nights a year reach 32° or below and 2 reach 0° or below. In the coldest January of the last 30 years the month averaged 23°.
How hot does it get in Trego-Rohrersville Station?
July, with a typical high of 86° and a low of 64°. About 25 days a year reach 90° (Sharpsburg 5 S, MD).
When is the first and last frost in Trego-Rohrersville Station?
In half of years the last spring frost (32°) comes by April 26 and the first fall frost by October 18, about 175 frost-free days, at Sharpsburg 5 S, MD.
What growing zone is Trego-Rohrersville Station in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 4°.
What is the best time of year to visit Trego-Rohrersville Station?
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 Trego-Rohrersville Station getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 60% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Trego-Rohrersville Station.
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.