Washington DC shows a moderate seasonal swing: sample heat runs higher around Sep–Nov, softer around Jul–Aug, Dec (monthly sample means about 1.2–1.8). Long weekends, conventions and school breaks often beat a simple “season.” Index ≈ each hotel’s off-peak baseline—not a live city-wide rate.
January 2026
2 public holidaysFebruary 2026
1 public holidaysMarch 2026
No public holidays this month1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
April 2026
No public holidays this month1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
May 2026
1 public holidaysJune 2026
1 public holidaysJuly 2026
1 public holidaysAugust 2026
No public holidays this month1
2
3
41.3
51.3
6
7
8
9
10
111.4
12
13
14
15
16
17
18
19
201.4
211.7
222.3
231.3
24
25
26
27
28
29
30
31
September 2026
1 public holidays1
2
3
4
51.3
6
81.5
91.6
101.3
111.4
121.5
131.4
142.9
152.7
162.8
171.7
181.4
191.5
201.3
211.8
222.5
232.5
241.6
251.4
261.5
271.6
282.8
292.4
302.0
October 2026
1 public holidays11.6
21.4
31.6
41.4
52.0
62.1
72.1
81.6
91.5
101.6
111.8
132.8
142.8
151.8
161.5
171.5
181.5
191.9
202.4
212.2
221.9
231.6
241.7
251.4
261.8
272.0
281.8
291.5
30
311.3
November 2026
2 public holidays11.3
21.6
31.8
41.8
51.5
6
71.3
8
91.6
101.5
121.5
131.4
141.6
151.5
162.0
171.8
181.8
191.4
20
21
22
23
24
25
27
28
29
301.3
December 2026
1 public holidaysIndex ≈ 1.0 is each hotel’s sample off-peak baseline; shown when >1.2. Sampled reference, not live city-wide rates