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Washington Climate and Weather Charts
Washington Dulles International Airport (IAD)
Washington, District of Columbia - DC, USA)
Washington features a continental climate with warm and humid summers, contrasting with cooler, frosty winters. Located in the District of Columbia, the capital city of Washington is at its hottest between July and August, when temperatures regularly exceed 30°C / 86°F.
The rainfall in the Washington DC area is spread fairly evenly throughout the year and is rarely excessive. As the winter season approaches the climate in Washington quickly begins to change, with daytime temperatures averaging just 6°C / 43°F between December and February. Snowfalls can be expected at anytime during the winters in Washington, together with sharp frosts and crisp, icy days. The average annual daytime temperatures in Washington are around 19°C / 66°F.
Washington Climate Description: Continental climate
Washington Dulles Airport (IAD) Location: Northern Hemisphere, USA, District of Columbia
Annual High / Low Daytime Temperatures at Washington: 31°C / 5°C (88°F / 41°F)
Average Daily January Temperature at Washington Airport (IAD): 5ºC / 41ºF
Average Daily June Temperature at Washington Airport (IAD): 29ºC / 84ºF
Annual Rainfall / Precipication Washington at Airport (IAD): 1011 mm / 40 inches
Washington Dulles Airport (IAD):
Climate and Weather Charts
Washington Dulles International Airport (IAD)
Temperature Chart |
Washington IAD Airport
Temperatures |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Average |
Washington - Maximum
Celcius (°C) |
5 |
7 |
13 |
19 |
25 |
29 |
31 |
30 |
27 |
20 |
14 |
8 |
19 |
Washington - Minimum
Celcius (°C) |
-3 |
-2 |
3 |
8 |
13 |
19 |
25 |
21 |
17 |
10 |
5 |
-1 |
10 |
Washington - Maximum
Fahrenheit (°F) |
41 |
45 |
55 |
66 |
77 |
84 |
88 |
86 |
81 |
68 |
57 |
46 |
66 |
Washington - Minimum
Fahrenheit (°F) |
27 |
28 |
37 |
46 |
55 |
66 |
77 |
70 |
63 |
50 |
41 |
30 |
49 |
Washington Dulles International Airport (IAD)
Rainfall / Precipitation Chart |
Washington IAD Airport
Rainfall |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Total |
| Washington Rainfall (mm) |
69 |
76 |
107 |
84 |
86 |
91 |
89 |
119 |
79 |
61 |
76 |
74 |
1011 |
| Washington Rainfall (inches) |
2.7 |
3.0 |
4.2 |
3.3 |
3.4 |
3.6 |
3.5 |
4.7 |
3.1 |
2.4 |
3.0 |
2.9 |
40 |
Washington Dulles International Airport (IAD)
Seasonal Chart |
Washington IAD Airport
Seasons |
Average
Temp
(Max °C) |
Average
Temp
(Min °C) |
Average
Temp
(Max °F) |
Average
Temp
(Min °F) |
Total
Rainfall
(mm) |
Total
Rainfall
(inches) |
| Mar to May (Spring) |
19 |
8 |
66 |
46 |
277 |
11 |
| Jun to Aug (Summer) |
30 |
22 |
86 |
71 |
299 |
12 |
| Sept to Nov (Autumn / Fall) |
20 |
11 |
69 |
51 |
216 |
9 |
| Dec to Feb (Winter) |
7 |
-2 |
44 |
28 |
219 |
9 |
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