Port Deposit, MD climate
Port Deposit has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 24°, and about 18 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decade7° warmer than normal today. The forecast high is 79°, and a typical Oct 1 in Port Deposit peaks around 72°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Port Deposit feels like
Winter
Spring
Summer
Fall
Port Deposit 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 | 41° | 24° | 3.3" | 5.0" | 11 | 5 | 24° – 41° |
| February | 44° | 26° | 2.7" | 7.1" | 10 | 5 | 23° – 41° |
| March | 52° | 33° | 4.2" | 2.6" | 11 | 2 | 36° – 51° |
| April | 65° | 42° | 3.6" | 0.1" | 11 | 0 | 48° – 58° |
| May | 74° | 52° | 3.8" | 0 | 12 | 0 | 59° – 69° |
| June | 83° | 62° | 4.4" | 0 | 11 | 0 | 69° – 76° |
| July | 87° | 67° | 4.8" | 0 | 11 | 0 | 73° – 80° |
| August | 85° | 65° | 4.2" | 0 | 10 | 0 | 71° – 77° |
| September | 78° | 58° | 4.8" | 0 | 9 | 0 | 65° – 72° |
| October | 67° | 46° | 4.1" | 0 | 9 | 0 | 52° – 63° |
| November | 56° | 36° | 3.3" | 0.3" | 9 | 0 | 40° – 51° |
| December | 46° | 29° | 4.0" | 3.0" | 11 | 2 | 30° – 47° |
| Year | 65° | 45° | 47.2" | 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 Port Deposit
Port Deposit gets 47 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 217 frost-free days a year
In half of years the last 32° night comes by April 3 and the first one by November 6. That leaves about 217 frost-free days for gardens, longer than 81% of U.S. towns.
Heating and cooling a home in Port Deposit
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Port Deposit, 79% of that work is heating and 21% is cooling.
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.
How Port Deposit 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 Port Deposit averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.2°). The shift is larger than in 84% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Port Deposit’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 23° to 41°. September is the most reliable, staying within 6°.
Common questions about Port Deposit’s climate
What is the coldest month in Port Deposit?
January, with a typical high of 41° and a low of 24°.
What is the hottest month in Port Deposit?
July, with a typical high of 87° and a low of 67°. About 37 days a year reach 90°.
How much snow does Port Deposit get?
About 18 inches in a normal winter, most of it in February.
When is the first frost in Port Deposit?
In half of years the first 32° night comes by November 6, and the last spring frost by April 3.
What is the rainiest month in Port Deposit?
July, with 4.8 inches of rain and melted snow. The year totals 47 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Port Deposit itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Octoraro Lake, PA (13 mi, snow) and Conowingo Dam, MD (5 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.