Mays Chapel, MD climate
Mays Chapel has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 88°, a January night drops to 24°, and about 19 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Mays Chapel feels like
Winter
Spring
Summer
Fall
Mays Chapel 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° | 24° | 3.2" | 6.4" | 10 | 4 | 24° – 41° |
| February | 45° | 25° | 2.9" | 7.5" | 9 | 5 | 24° – 43° |
| March | 54° | 32° | 4.1" | 2.8" | 11 | 2 | 37° – 52° |
| April | 66° | 42° | 3.8" | 0 | 11 | 0 | 50° – 59° |
| May | 75° | 52° | 4.3" | 0 | 12 | 0 | 59° – 69° |
| June | 83° | 61° | 4.4" | 0 | 11 | 0 | 69° – 76° |
| July | 88° | 66° | 4.7" | 0 | 10 | 0 | 72° – 81° |
| August | 85° | 64° | 4.3" | 0 | 10 | 0 | 71° – 78° |
| September | 79° | 57° | 4.7" | 0 | 9 | 0 | 65° – 72° |
| October | 67° | 45° | 4.4" | 0 | 9 | 0 | 53° – 63° |
| November | 56° | 35° | 3.6" | 0.1" | 9 | 0 | 40° – 51° |
| December | 46° | 28° | 3.8" | 2.5" | 10 | 2 | 28° – 48° |
| Year | 65° | 44° | 48.2" | 19.3" | 121 | 13 |
“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 Mays Chapel
Mays Chapel gets 48 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 121 days a year. Snow covers the ground about 13 days of the year.
About 220 frost-free days a year
In half of years the last 32° night comes by April 2 and the first one by November 7. That leaves about 220 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in Mays Chapel
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Mays Chapel, 78% of that work is heating and 22% 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.
Mays Chapel and its neighbors
Mays Chapel borders 4 towns with climate data. January nights across them vary by 0.8°. Cockeysville has the coldest January nights (23°) and Towson the hottest July afternoons (88°). Mays Chapel’s January low is 24° and its July high 88°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Mays Chapel 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 Mays Chapel averaged 1.9° warmer than the 1900s. The biggest change is in December (+3.1°). The shift is larger than in 92% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Mays Chapel’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 28° to 48°. August is the most reliable, staying within 7°.
Common questions about Mays Chapel’s climate
What is the coldest month in Mays Chapel?
January, with a typical high of 42° and a low of 24°.
What is the hottest month in Mays Chapel?
July, with a typical high of 88° and a low of 66°. About 18 days a year reach 90°.
How much snow does Mays Chapel get?
About 19 inches in a normal winter, most of it in February.
When is the first frost in Mays Chapel?
In half of years the first 32° night comes by November 7, and the last spring frost by April 2.
What is the rainiest month in Mays Chapel?
July, with 4.7 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Mays Chapel itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Baltimore Wash Intl Airport, MD (19 mi, snow) and Cylburn, 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.