Royal Oak (2 mi SSW), Maryland climate: Climate normals at a NOAA weather station

What is the weather like at Royal Oak (2 mi SSW) each month?

July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 29°F. The most precipitation falls in August (4.78 in), the least in February (3.06 in).

Which months are mildest at Royal Oak (2 mi SSW)?

Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (8).

That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.

When is the last frost at Royal Oak (2 mi SSW)?

In Royal Oak (2 mi SSW), the last spring frost (32°F) comes after April 1 in half of years and after April 15 in one year in ten; the first autumn frost comes before November 7 in half of years and before October 24 in one year in ten.

Last spring frost, half of years after

April 11 year in 10 after April 15; 9 in 10 after March 18

First autumn frost, half of years before

November 71 year in 10 before October 24; 9 in 10 before November 23

NOAA puts the median frost-free season at 220 days, and the season without a hard freeze (28°F) at 246 days.

A hard freeze (28°F) comes after March 20 in half of springs and before November 20 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Royal Oak (2 mi SSW) in zone 8a in ZIP code 21662, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 8a: the coldest night of a typical year reaches 11°F (30 complete years).

Frost dates for every NOAA station in Maryland · Frost dates by ZIP code

How hot and how cold does it get at Royal Oak (2 mi SSW)?

In a normal year in Royal Oak (2 mi SSW), 32 days a year reach 90°F, 69 nights fall to 32°F or colder and 118 days bring measurable precipitation.

Days at 90°F or more

32a normal year

Days at 100°F or more

fewer than 1a normal year

Nights at 32°F or colder

69a normal year

Days that stay below freezing

6high of 32°F or less

Days with 0.01 inch of precipitation

118a normal year

Days with 1 inch of snow or more

4a normal year

The highest temperature in this station's record (since 1948) is 102°F, on July 6, 2010; the lowest is −6°F, on January 18, 1982.

The wettest calendar year on that record is 2020, with 67.66 in; the snowiest season is 2002–03, with 45.0 inches.

How sunny is it at Royal Oak (2 mi SSW)?

Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds at Royal Oak (2 mi SSW), 4.2 kWh per square metre a day. July is the sunniest month (84%) and January the cloudiest (71%).

How many heating and cooling degree days does Royal Oak (2 mi SSW) record?

A normal year at Royal Oak (2 mi SSW) brings 3,972 heating degree days, 26% fewer than the median U.S. place (5,373), and 1,473 cooling degree days, 62% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,342 growing degree days a year above 50°F.

Have recent years at Royal Oak (2 mi SSW) been warmer than normal?

2025 averaged 58.4°F, 0.4°F above the 1991-2020 normal of 58.0°F. 4 of the 5 complete years since 2021 ran warmer than the normal.

Over 131 complete years from 1892 to 2025, the station's annual mean temperature rose at a fitted 1.8°F per century (+0.10°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Royal Oak (2 mi SSW) share this climate record?

9 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.

• Easton, MD17,381 people · 8 mi NE
• Cambridge, MD13,262 people · 13 mi SE
• Trappe, MD1,472 people · 8 mi SE
• St. Michaels, MD1,073 people · 5 mi N
• Algonquin, MD1,027 people · 10 mi SE
• Tilghman Island, MD874 people · 8 mi W
• Oxford, MD601 people · 2 mi SE
• Madison, MD145 people · 14 mi S
• Church Creek, MD105 people · 15 mi S

Nearby and next

• Maryland climateThe statewide normals and every place in the state
• Stevensville, MD19 miles from this station, 57.1°F a year
• Annapolis, MD24 miles from this station, 57.7°F a year
• Vienna, MD25 miles from this station, 58.3°F a year
• Annapolis Police Barracks, MD25 miles from this station, 58.8°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made