O'Donnell, MD
Unincorporated community in Howard County, Maryland
O'Donnell is a small unincorporated community in Howard County, Maryland. It is 2.3 miles NE of Ellicott City, the nearest town. Its ZIP code is 21042.
O'Donnell at a glance
- State
- Maryland
- County
- Howard County
- ZIP code
- 21042
- Nearest town
- Ellicott City (2.3 mi)
- Time zone
- America/New York
- Coordinates
- 39.2522, -76.8636
Weather in O'Donnell now
Loading the National Weather Service forecast…
O'Donnell weather by the hour
O'Donnell weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of O'Donnell.
This week in O'Donnell
Sunrise, sunset and moon in O'Donnell
What is the weather usually like in O'Donnell?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 89°F average high
- Januarycoldest month · 25°F average low
- 45.0 inprecipitation per year · 1,143 mm
- 19.3 insnowfall per year · 49 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit O'Donnell: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station BALTIMORE WASH INTL AP, MD US (USW00093721), adjusted for the elevation of O'Donnell.
O'Donnell weather month by month
Sunrise and sunset in O'Donnell through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:23 AM | 5:10 PM | 9 h 46 min |
| February | 6:57 AM | 5:45 PM | 10 h 48 min |
| March | 7:16 AM | 7:15 PM | 11 h 58 min |
| April | 6:28 AM | 7:46 PM | 13 h 17 min |
| May | 5:52 AM | 8:15 PM | 14 h 23 min |
| June | 5:38 AM | 8:37 PM | 14 h 58 min |
| July | 5:52 AM | 8:34 PM | 14 h 42 min |
| August | 6:19 AM | 8:04 PM | 13 h 45 min |
| September | 6:47 AM | 7:17 PM | 12 h 29 min |
| October | 7:16 AM | 6:30 PM | 11 h 14 min |
| November | 6:49 AM | 4:54 PM | 10 h 4 min |
| December | 7:18 AM | 4:46 PM | 9 h 28 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in O'Donnell?
O'Donnell has a humid subtropical climate. The warmest month is July, with an average high of 89°F (32°C), and the coldest is January, with average lows of 25°F (-4°C).
It gets about 45.0 inches (1,143 mm) of precipitation a year. The wettest month is July and the driest is February. Snow is common: about 19 inches fall in an average year.
The best time to visit O'Donnell is May–June and September–October. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near O'Donnell
The closest live webcam is Arbutus › South, 8.4 miles E of O'Donnell.
Webcams: Windy.com. Distances in a straight line from O'Donnell.
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Map of O'Donnell, MD
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
O'Donnell Street View
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Open in Google Maps ›Towns near O'Donnell
Other communities near O'Donnell
- Bryant Woods2.1 mi S
- Talbott Springs2.9 mi S
- Swansfield2.9 mi SW
- Hawthorn North3.2 mi S
- Phelps Luck3.2 mi SE
- Wardens Landing3.3 mi SE
- Woodleigh3.4 mi S
- Sebring3.5 mi S
- Sebring3.5 mi S
- Hawthorn3.6 mi S
- Stevens Forest3.8 mi S
- Chriswood Manor3.9 mi SW
- Jeffers Hill4.0 mi SE
- Dasher Green4.3 mi S
- Sewells Orchard4.3 mi SE
Questions about O'Donnell
Where is O'Donnell, MD?
O'Donnell is an unincorporated community in Howard County, Maryland, 2.3 miles NE of Ellicott City.
What county is O'Donnell in?
O'Donnell is in Howard County, Maryland.
What is the ZIP code of O'Donnell, MD?
The ZIP code for O'Donnell is 21042.
What is the nearest town to O'Donnell?
Ellicott City, 2.3 miles away.
Are there webcams near O'Donnell?
Yes. The closest is Arbutus › South, 8.4 miles away.
What is the hottest month in O'Donnell?
July, with an average high of 89°F (32°C).
What is the coldest month in O'Donnell?
January, with an average low of 25°F (-4°C).
How much does it rain in O'Donnell?
About 45.0 inches (1,143 mm) a year; the wettest month is July.
Does it snow in O'Donnell?
Yes, about 19 inches of snow fall in an average year.
When is the best time to visit O'Donnell?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does O'Donnell have?
Humid subtropical (Köppen Cfa).
Last updated: