S
M
T
W
T
F
S
26
88°
58°
27
81°
57°
28
82°
58°
29
82°
57°
30
81°
57°
31
82°
58°
1
81°
58°
2
84°
61°
3
85°
63°
4
84°
62°
5
83°
60°
6
85°
63°
7
82°
63°
8
85°
62°
9
86°
63°
10
87°
64°
11
86°
63°
12
83°
59°
13
86°
57°
14
82°
58°
15
80°
60°
16
83°
62°
17
Hist. Avg.
82°
60°
18
Hist. Avg.
82°
60°
19
Hist. Avg.
82°
60°
20
Hist. Avg.
82°
60°
21
Hist. Avg.
81°
60°
22
Hist. Avg.
81°
59°
23
Hist. Avg.
81°
59°
24
Hist. Avg.
81°
59°
25
Hist. Avg.
81°
59°
26
Hist. Avg.
80°
59°
27
Hist. Avg.
80°
58°
28
Hist. Avg.
80°
58°
29
Hist. Avg.
80°
58°
30
Hist. Avg.
80°
58°
31
Hist. Avg.
79°
57°
1
Hist. Avg.
79°
57°
2
Hist. Avg.
79°
57°
3
Hist. Avg.
79°
56°
4
Hist. Avg.
78°
56°
5
Hist. Avg.
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Chelmsford
Chelmsford's August 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 57° and 64°. The average high for August is 84° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Chelmsford. See also: September | October | November.
