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Calvert County, MD

An ordinary day in Calvert County, MD: was cooler than 62 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
68.5°F
Coldest since 2023
13th coldest of 76
Low
60.5°F
Warmest since 2025
21st warmest of 76

No measurable precipitation in the county average of Calvert 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 Calvert County, MD since 1951: 68.5°F in 2026; the highest is 88.5°F, in 1954.
2023: 68.3°F1954: 88.5°F2026: 68.5°F 2026 68.5°F 1954 88.5°F since 2023 1951 2026
  • Normal range, 69.1 to 81°F
Every year as a table

Every 29 September low of the county average in Calvert County, MD since 1951: 60.5°F in 2026; the lowest is 42.4°F, in 1978.

YearHigh, °FLow, °F
202668.560.5
202579.963.6
202484.468.9
202368.355.8
202267.451.4
202180.759.2
202079.665.9
201983.167.4
201873.659.6
201778.754.6
20167263.1
201580.666.7
201479.455.8
201371.353.3
20128057.9
201180.266.3
20108159.4
200979.254.4
200876.963
20078157.9
200678.254.4
200578.652.9
200477.465.3
200373.253.2
20027857.6
200163.248.2
200073.348.3
199974.765.8
199885.659
199770.661.2
199676.455.2
199576.553.8
19947454.9
199369.247.1
199266.454.8
199168.545.5
199075.753.6
198967.445.5
198879.853.8
198782.255.9
198672.363.4
198571.447.4
198453.244.8
198373.252.7
198274.354.2
198172.845.2
198073.946.6
19797562.5
197874.842.4
197774.252.2
197671.451.5
197571.149.1
197478.264.9
197383.665
197270.861.3
197177.658
197068.146.1
196971.549.4
19687551.5
196778.465.3
196662.354
196569.649.3
196464.250.9
196378.856.4
196269.546.5
196177.448.1
19607261.8
195982.167.5
195866.545.2
195759.445.6
195661.351.9
19557757.7
195488.560.8
195380.951.9
195275.848.6
195169.144.9

The month

September 2026 so far averaged 71.8°F in Calvert County, MD, the warmest 1 to 29 September in the county average since 2023, tied 12th warmest of 76 (with 2023) (county average from NOAA gridded data, 1951 to 2026).

The month in words
  • August 2026 averaged 78.3°F in Calvert County, MD, the warmest August in the county average since 2021, 9th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
  • Tuesday 29 September 2026: a high of 68.5°F averaged over Calvert County, MD, the coldest 29 September day in the county average since 2023, tied 13th coldest of 76 (with 1991) (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 60.5°F averaged over Calvert County, MD, the warmest 29 September night in the county average since 2025, 21st warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Annapolis, MD 32.7 mi, the nearest city with its own station