Havre de Grace, MD climate
Havre de Grace has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 26°, and about 18 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Havre de Grace feels like
Winter
Spring
Summer
Fall
Havre de Grace weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 42° | 26° | 3.2" | 5.0" | 11 | 5 | 25° – 41° |
| February | 44° | 27° | 2.6" | 7.1" | 10 | 5 | 24° – 42° |
| March | 53° | 34° | 4.1" | 2.6" | 11 | 2 | 37° – 52° |
| April | 65° | 44° | 3.5" | 0.1" | 11 | 0 | 49° – 58° |
| May | 74° | 53° | 3.8" | 0 | 12 | 0 | 59° – 70° |
| June | 83° | 63° | 4.3" | 0 | 11 | 0 | 69° – 77° |
| July | 87° | 68° | 4.8" | 0 | 11 | 0 | 74° – 81° |
| August | 85° | 66° | 4.2" | 0 | 10 | 0 | 72° – 78° |
| September | 79° | 60° | 4.7" | 0 | 9 | 0 | 66° – 73° |
| October | 67° | 48° | 3.9" | 0 | 9 | 0 | 53° – 64° |
| November | 56° | 37° | 3.2" | 0.3" | 9 | 0 | 41° – 52° |
| December | 46° | 30° | 4.0" | 3.0" | 11 | 2 | 31° – 48° |
| Year | 65° | 46° | 46.2" | 18.1" | 124 | 14 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Havre de Grace
Havre de Grace gets 46 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 124 days a year. Snow covers the ground about 14 days of the year.
About 201 frost-free days a year
In half of years the last 32° night comes by April 10 and the first one by October 30. That leaves about 201 frost-free days for gardens, longer than 73% of U.S. towns.
Heating and cooling a home in Havre de Grace
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Havre de Grace, 80% of that work is heating and 20% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Havre de Grace and its neighbors
Havre de Grace borders 1 town with climate data. January nights across them vary by 0.8°. Aberdeen has both the coldest January nights (25°) and the hottest July afternoons (88°). Havre de Grace’s January low is 26° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Havre de Grace compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Havre de Grace averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.1°). The shift is larger than in 82% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Havre de Grace’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 24° to 42°. September is the most reliable, staying within 6°.
Common questions about Havre de Grace’s climate
What is the coldest month in Havre de Grace?
January, with a typical high of 42° and a low of 26°.
What is the hottest month in Havre de Grace?
July, with a typical high of 87° and a low of 68°. About 26 days a year reach 90°.
How much snow does Havre de Grace get?
About 18 inches in a normal winter, most of it in February.
When is the first frost in Havre de Grace?
In half of years the first 32° night comes by October 30, and the last spring frost by April 10.
What is the rainiest month in Havre de Grace?
July, with 4.8 inches of rain and melted snow. The year totals 46 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Havre de Grace itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Octoraro Lake, PA (18 mi, snow) and Aberdeen Phillips Fld, MD (6 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.