Template:Washington, D.C. weatherbox
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high °C (°F) | 21.9 (71.4) |
23.8 (74.8) |
26.9 (80.4) |
32.4 (90.3) |
35.5 (95.9) |
36.6 (97.9) |
37.2 (99.0) |
39.3 (102.7) |
33.2 (91.8) |
28.2 (82.8) |
25.5 (77.9) |
24.8 (76.6) |
39.3 (102.7) |
| Mean daily maximum °C (°F) | 7.3 (45.1) |
10.0 (50.0) |
15.5 (59.9) |
19.3 (66.7) |
23.9 (75.0) |
28.9 (84.0) |
30.9 (87.6) |
31.9 (89.4) |
27.5 (81.5) |
19.0 (66.2) |
12.4 (54.3) |
7.4 (45.3) |
19.5 (67.1) |
| Daily mean °C (°F) | 3.0 (37.4) |
5.2 (41.4) |
9.9 (49.8) |
13.8 (56.8) |
18.5 (65.3) |
24.7 (76.5) |
25.0 (77.0) |
26.0 (78.8) |
20.2 (68.4) |
14.4 (57.9) |
8.7 (47.7) |
3.9 (39.0) |
14.4 (58.0) |
| Mean daily minimum °C (°F) | −0.1 (31.8) |
0.6 (33.1) |
4.4 (39.9) |
8.4 (47.1) |
12.8 (55.0) |
17.2 (63.0) |
18.0 (64.4) |
19.5 (67.1) |
14.9 (58.8) |
10.2 (50.4) |
5.3 (41.5) |
0.6 (33.1) |
9.3 (48.8) |
| Record low °C (°F) | −24.0 (−11.2) |
−15.6 (3.9) |
−7.4 (18.7) |
−2.5 (27.5) |
−0.8 (30.6) |
5.6 (42.1) |
8.4 (47.1) |
8.0 (46.4) |
3.0 (37.4) |
−2.3 (27.9) |
−6.2 (20.8) |
−13.6 (7.5) |
−24.0 (−11.2) |
| Average precipitation mm (inches) | 59.9 (2.36) |
59.2 (2.33) |
76.2 (3.00) |
87.7 (3.45) |
88.3 (3.48) |
90.4 (3.56) |
100.2 (3.94) |
100.2 (3.94) |
100.4 (3.95) |
100.0 (3.94) |
91.4 (3.60) |
89.8 (3.54) |
1,043.7 (41.09) |
| Average precipitation days (≥ 1.0 mm) | 10.7 | 10.5 | 10.4 | 12.2 | 11.4 | 10.6 | 12.5 | 10.5 | 10.1 | 8.6 | 8.3 | 8.7 | 124.5 |
| Average relative humidity (%) | 78.9 | 73.6 | 68.0 | 67.7 | 67.2 | 66.9 | 66.2 | 67.4 | 70.0 | 76.5 | 81.0 | 81.8 | 72.1 |
| Average dew point °C (°F) | 0.2 (32.4) |
0.8 (33.4) |
3.9 (39.0) |
7.0 (44.6) |
11.2 (52.2) |
14.7 (58.5) |
16.6 (61.9) |
16.8 (62.2) |
13.4 (56.1) |
10.1 (50.2) |
5.9 (42.6) |
1.2 (34.2) |
8.5 (47.3) |
| Mean monthly sunshine hours | 91.4 | 108.5 | 170.0 | 178.4 | 212.3 | 247.6 | 293.2 | 237.6 | 179.3 | 116.5 | 73.3 | 67.1 | 1,975.2 |
| Source 1: NOAA (relative humidity, dew point and sun 1961−1990)[1][2][3] | |||||||||||||
| Source 2: Weather Atlas (UV)[4] | |||||||||||||
Notes
[edit]References
[edit]- ^ "WMO Climate Normals for WASHINGTON DC/NATIONAL ARPT VA 1961–1990". National Oceanic and Atmospheric Administration. Retrieved July 18, 2020.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved October 31, 2024.
- ^ "Summary of Monthly Normals 1991–2020". National Oceanic and Atmospheric Administration. Retrieved May 4, 2021.
- ^ "Washington, DC - Detailed climate information and monthly weather forecast". Weather Atlas. Yu Media Group. Retrieved June 29, 2019.