포츠머스 (버지니아주)
기후

| Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 1월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 2월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 3월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 4월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 5월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 6월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 7월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 8월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 9월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 10월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 11월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 12월 | Norfolk International Airport, Virginia (1981–2010 normals, extremes 1874–present)의 기후> 연간 |
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| 역대 최고 기온 °F (°C) | 84 (29) | 82 (28) | 92 (33) | 97 (36) | 100 (38) | 102 (39) | 105 (41) | 105 (41) | 100 (38) | 95 (35) | 86 (30) | 82 (28) | 105 (41) |
| 월평균 최고 기온 °F (°C) | 71.1 (21.7) | 73.2 (22.9) | 80.2 (26.8) | 86.4 (30.2) | 91.4 (33.0) | 95.5 (35.3) | 97.8 (36.6) | 95.8 (35.4) | 92.1 (33.4) | 85.6 (29.8) | 78.7 (25.9) | 72.5 (22.5) | 98.8 (37.1) |
| 일평균 최고 기온 °F (°C) | 48.1 (8.9) | 50.9 (10.5) | 58.2 (14.6) | 67.6 (19.8) | 75.4 (24.1) | 83.5 (28.6) | 87.4 (30.8) | 85.1 (29.5) | 79.3 (26.3) | 70.1 (21.2) | 61.1 (16.2) | 52.1 (11.2) | 68.3 (20.2) |
| 일평균 최저 기온 °F (°C) | 32.7 (0.4) | 34.4 (1.3) | 40.5 (4.7) | 48.9 (9.4) | 57.9 (14.4) | 67.1 (19.5) | 71.9 (22.2) | 70.7 (21.5) | 65.3 (18.5) | 54.0 (12.2) | 44.6 (7.0) | 36.1 (2.3) | 52.1 (11.2) |
| 월평균 최저 기온 °F (°C) | 17.6 (−8.0) | 21.2 (−6.0) | 27.2 (−2.7) | 35.7 (2.1) | 45.7 (7.6) | 55.5 (13.1) | 63.1 (17.3) | 61.6 (16.4) | 53.7 (12.1) | 39.7 (4.3) | 30.5 (−0.8) | 21.7 (−5.7) | 15.2 (−9.3) |
| 역대 최저 기온 °F (°C) | −3 (−19) | 2 (−17) | 14 (−10) | 23 (−5) | 36 (2) | 45 (7) | 54 (12) | 49 (9) | 40 (4) | 27 (−3) | 17 (−8) | 5 (−15) | −3 (−19) |
| 평균 강수량 인치 (mm) | 3.40 (86) | 3.12 (79) | 3.68 (93) | 3.41 (87) | 3.41 (87) | 4.26 (108) | 5.14 (131) | 5.52 (140) | 4.76 (121) | 3.42 (87) | 3.15 (80) | 3.26 (83) | 46.53 (1,182) |
| 평균 강설량 인치 (cm) | 2.4 (6.1) | 2.0 (5.1) | 0.2 (0.51) | trace | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | trace | 1.2 (3.0) | 5.8 (15) |
| 평균 강수일수 (≥ 0.01 in) | 10.4 | 9.5 | 10.6 | 10.1 | 10.6 | 9.9 | 11.1 | 10.1 | 8.8 | 7.6 | 8.5 | 9.8 | 117.0 |
| 평균 강설일수 (≥ 0.1 in) | 1.6 | 1.3 | 0.4 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.6 | 4.0 |
| 평균 상대 습도 (%) | 66.3 | 65.6 | 64.6 | 62.8 | 68.8 | 70.6 | 73.3 | 75.2 | 74.4 | 72.1 | 68.5 | 67.0 | 69.1 |
| 평균 월간 일조시간 | 171.5 | 175.2 | 229.3 | 252.8 | 271.7 | 280.1 | 278.3 | 260.4 | 231.4 | 208.3 | 175.7 | 160.4 | 2,695.1 |
| 가능 일조율 | 56 | 58 | 62 | 64 | 62 | 64 | 62 | 62 | 62 | 60 | 57 | 53 | 61 |
출처: NOAA (relative humidity and sun 1961–1990)