United States
Weather in Frederick through the year
The average of the weather stations Washington (64 km), Carlisle Wtp (92 km) and Dover (167 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 5.5 °C | 4.8 °C – 6.4 °C |
| February | 7.3 °C | 5.5 °C – 9.5 °C |
| March | 12.4 °C | 9.8 °C – 15.4 °C |
| April | 18.4 °C | 15.6 °C – 20.7 °C |
| May | 23.3 °C | 20.7 °C – 26.2 °C |
| June | 28.5 °C | 26.4 °C – 30.5 °C |
| July | 30.9 °C | 30.2 °C – 31.2 °C |
| August | 29.3 °C | 28.3 °C – 30.1 °C |
| September | 25.8 °C | 23.0 °C – 28.2 °C |
| October | 19.7 °C | 16.8 °C – 22.8 °C |
| November | 12.9 °C | 9.7 °C – 16.6 °C |
| December | 7.5 °C | 6.5 °C – 9.5 °C |