Port Royal weather by month
What a typical year looks like in Port Royal, Virginia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Corbin, 16 km from Port Royal; records cover 1959–2026.
The year at a glance
- Precipitation a year
- 44.8 in1137 mm
- Snow a year
- 12 in29 cm
- Last spring freeze
- Apr 11
- First fall freeze
- Oct 25
- Heating degree days
- 4,294
- Cooling degree days
- 1,252
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 11°−12° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Port Royal in January
Highs average 45°7° and lows 26°−3°, with 3.3 in83 mm of precipitation and 4 in9 cm of snow in a typical January.
- Record high
- 81°27° (2002)
- Record low
- −8°−22° (1994)
- Heating degree days
- 910
- Cooling degree days
- 0
Port Royal in February
Highs average 49°9° and lows 28°−2°, with 2.9 in73 mm of precipitation and 5 in13 cm of snow in a typical February.
- Record high
- 81°27° (2000)
- Record low
- −11°−24° (1996)
- Heating degree days
- 743
- Cooling degree days
- 0
Port Royal in March
Highs average 57°14° and lows 35°2°, with 3.9 in99 mm of precipitation and 0.9 in2.3 cm of snow in a typical March.
- Record high
- 90°32° (1998)
- Record low
- 6°−14° (1960)
- Heating degree days
- 598
- Cooling degree days
- 4
Port Royal in April
Highs average 68°20° and lows 45°7°, with 3.5 in90 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 94°34° (1960)
- Record low
- 20°−7° (1965)
- Heating degree days
- 294
- Cooling degree days
- 29
Port Royal in May
Highs average 75°24° and lows 54°12°, with 4.1 in105 mm of precipitation in a typical May.
- Record high
- 98°37° (2026)
- Record low
- 27°−3° (1966)
- Heating degree days
- 110
- Cooling degree days
- 93
Port Royal in June
Highs average 83°28° and lows 62°17°, with 4 in101 mm of precipitation in a typical June.
- Record high
- 99°37° (1959)
- Record low
- 36°2° (1977)
- Heating degree days
- 13
- Cooling degree days
- 246
Port Royal in July
Highs average 87°31° and lows 67°19°, with 4 in101 mm of precipitation in a typical July.
- Record high
- 103°39° (1988)
- Record low
- 43°6° (1988)
- Heating degree days
- 0
- Cooling degree days
- 375
Port Royal in August
Highs average 86°30° and lows 65°18°, with 3.5 in89 mm of precipitation in a typical August.
- Record high
- 104°40° (1983)
- Record low
- 43°6° (1986)
- Heating degree days
- 1
- Cooling degree days
- 322
Port Royal in September
Highs average 79°26° and lows 58°15°, with 4.7 in118 mm of precipitation in a typical September.
- Record high
- 100°38° (1980)
- Record low
- 31°−1° (1963)
- Heating degree days
- 42
- Cooling degree days
- 153
Port Royal in OctoberThis month
Highs average 69°20° and lows 47°8°, with 4 in102 mm of precipitation in a typical October.
- Record high
- 94°34° (2019)
- Record low
- 21°−6° (1969)
- Heating degree days
- 256
- Cooling degree days
- 27
Port Royal in November
Highs average 58°15° and lows 37°3°, with 3.3 in84 mm of precipitation and 0.1 in0.3 cm of snow in a typical November.
- Record high
- 86°30° (1974)
- Record low
- 11°−12° (1970)
- Heating degree days
- 530
- Cooling degree days
- 2
Port Royal in December
Highs average 49°9° and lows 30°−1°, with 3.6 in92 mm of precipitation and 1.8 in4.6 cm of snow in a typical December.
- Record high
- 80°27° (1998)
- Record low
- −3°−19° (1962)
- Heating degree days
- 797
- Cooling degree days
- 1