Arnold, MD Weather
Arnold, MD climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.
The warmest month of the year is July with an average maximum temperature of 87.70 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 23.80 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 20 degrees Fahrenheit, and fairly limited during winter with an average difference of 19 degrees Fahrenheit.
The annual average precipitation at Arnold is 44.78 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 4.42 Inches.
Weather Data
Current Conditions
|
Light Rain, 50°F | Humidity: 89% | Dewpoint: 47°F |
| Wind Speed: N 4.6 MPH (4 KT) | Heat Index: 50°F | ||
| Barometer: 30.14 in. | Wind Chill: 48°F |
Weather Forecast
 | Hi: 51°F | Today: A slight chance of rain this morning. Cloudy with areas of drizzle. Highs in the lower 50s. Northeast winds 5 to 10 mph. Chance of rain 20 percent. |
| Lo: 49°F | ||
| Hi: 55°F | Wednesday: Cloudy. A chance of showers...Mainly in the afternoon. Highs in the mid 50s. East winds around 5 mph. Chance of rain 40 percent. |
| Lo: 45°F | ||
 | Hi: 60°F | Thanksgiving day: Mostly cloudy. A chance of showers in the afternoon. Highs around 60. North winds around 5 mph. Chance of rain 30 percent. |
| Lo: 40°F | ||
| Hi: 49°F | Friday: Mostly cloudy with a 50 percent chance of showers. Highs in the upper 40s. |
| Lo: 35°F | ||
 | Hi: 55°F | Saturday: Mostly sunny. Highs in the mid 50s. |
| Lo: 31°F | ||
| Hi: 51°F | Sunday: Sunny. Highs in the lower 50s. |
| Lo: 35°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Gibbous Moon | Civil Twilight: 6:29 AM EST |
Sunrise: 6:58 AM EST |
| Sunset: 4:46 PM EST |
Civil Twilight: 5:15 PM EST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 41.8 | 45.0 | 54.3 | 65.1 | 74.8 | 83.2 | 87.7 | 85.3 | 78.0 | 66.9 | 55.7 | 46.8 | 65.4 |
| Mean °F | 32.8 | 35.1 | 43.6 | 53.6 | 63.6 | 72.4 | 77.5 | 75.6 | 68.3 | 56.6 | 46.0 | 37.7 | 55.2 |
| Min °F | 23.8 | 25.1 | 32.8 | 42.1 | 52.3 | 61.6 | 67.3 | 65.8 | 58.5 | 46.3 | 36.2 | 28.6 | 45.0 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 3.49 | 2.95 | 4.17 | 3.34 | 4.42 | 3.56 | 3.98 | 4.04 | 4.25 | 3.56 | 3.33 | 3.69 | 44.78 |
