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Frederick County, MD

An ordinary day in Frederick County, MD: was cooler than 51 of 75 earlier years in the county average (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

High
68.6°F
Coldest since 2023
24th coldest of 76
Low
58.6°F
Warmest since 2025
17th warmest of 76

No measurable precipitation in the county average of Frederick County, MD for 1 day to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Frederick County, MD since 1951: 68.6°F in 2026; the highest is 86.8°F, in 2019.
2023: 68.6°F2019: 86.8°F2026: 68.6°F 2026 68.6°F 2019 86.8°F since 2023 1951 2026
  • Normal range, 67.3 to 78.9°F
Every year as a table

Every 29 September low of the county average in Frederick County, MD since 1951: 58.6°F in 2026; the lowest is 35.3°F, in 1951.

YearHigh, °FLow, °F
202668.658.6
202582.359.5
202477.564.5
202368.648.3
202266.246.2
202177.853.8
202081.362.7
201986.862
201873.754.1
201776.547.9
201669.458
201577.763.2
201478.352.3
201367.345.1
201273.550.1
201177.362.3
201078.651.6
200973.950
200875.359.7
200776.852.2
200672.849
20057746.9
200469.461.5
200371.248.4
20027449.9
200161.945
200069.241.3
199970.863.6
199881.148.2
199766.456.5
199671.348.9
199575.249
199467.850.2
199367.344.8
19926749.8
199168.940.4
199076.353.3
198967.140.6
198878.951.1
19878253.4
198670.862.3
198569.944.1
198448.740.6
198373.545.7
198269.151.1
198166.139.1
198074.445.2
197967.759.3
197869.236.2
197770.245.7
197666.244.8
197570.144.1
197472.260.5
197377.863.1
197268.558.7
197174.158.6
197063.841.6
196968.342.7
196874.645.4
196772.658.4
196657.250.9
196567.543
196453.547
196380.354.8
196263.744.2
196172.238.4
196070.459.3
19598366.5
195865.138.1
195758.637.7
195657.750.1
195574.550.8
195486.455.3
195381.847
195275.644.7
195163.635.3

The month

September 2026 so far averaged 68.4°F in Frederick County, MD, the warmest 1 to 29 September in the county average since 2025, 14th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).

The month in words
  • August 2026 averaged 74.5°F in Frederick County, MD, the warmest August in the county average since 2022, tied 30th warmest of 132 (with 1918) (county average from NOAA's monthly county data, 1895 to 2026).
  • Tuesday 29 September 2026: a high of 68.6°F averaged over Frederick County, MD, the coldest 29 September day in the county average since 2023, tied 24th coldest of 76 (with 2023) (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 58.6°F averaged over Frederick County, MD, the warmest 29 September night in the county average since 2025, tied 17th warmest of 76 (with 1971) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Hagerstown, MD 24.1 mi, the nearest city with its own station