Northwest Harwich · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Northwest Harwich & neighbors — hit play
Every city on the map carries real forecast data from the same models as its city page, refreshed several times a day. The icon is the day's overall look; the number is the afternoon high.
Next 14 days at a glance
from the model forecast
Hottest day
26°
Sun, Aug 30
Coldest night
13°
Sat, Sep 12
Days with precip
3 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
23° 18°
25% precip chance
Sat 12 – Sun 13 Sep
19° 13°
typical range
Sat 19 – Sun 20 Sep
19° 13°
typical range
Sat 26 – Sun 27 Sep
19° 13°
typical range
30 days — Northwest Harwich
14 forecast + 16 climatology
Sun · Today Mostly cloudy
26°16°0.4 mm⌄
Wind17 mph W
Gusts31 mph
UV index7 – High
Precip chance36%
Sunrise06:04
Sunset19:17
Mon · Tomorrow Mostly cloudy
23°20°0.3 mm⌄
Wind13 mph W
Gusts25 mph
UV index7 – High
Precip chance37%
Sunrise06:05
Sunset19:16
Tuesday 1/9 Showers
21°18°1.8 mm⌄
Wind15 mph E
Gusts21 mph
UV index1 – Low
Precip chance69%
Sunrise06:06
Sunset19:14
Wednesday 2/9 Mostly cloudy
21°19°0.3 mm⌄
Wind16 mph SE
Gusts23 mph
UV index7 – High
Precip chance34%
Sunrise06:07
Sunset19:12
Thursday 3/9 Mostly cloudy
21°19°16.0 mm⌄
Wind20 mph SE
Gusts30 mph
UV index5 – Moderate
Precip chance90%
Sunrise06:08
Sunset19:11
Friday 4/9 Showers
21°19°0.4 mm⌄
Wind20 mph N
Gusts25 mph
UV index5 – Moderate
Precip chance50%
Sunrise06:09
Sunset19:09
Saturday 5/9 Partly cloudy
21°18°0.1 mm⌄
Wind11 mph N
Gusts14 mph
UV index6 – High
Precip chance25%
Sunrise06:10
Sunset19:07
Sunday 6/9 Sunny
23°19°17%⌄
Wind7 mph SE
Gusts15 mph
UV index6 – High
Precip chance17%
Sunrise06:11
Sunset19:06
Monday 7/9 Showers
25°18°6.2 mm⌄
Wind16 mph NW
Gusts27 mph
UV index5 – Moderate
Precip chance82%
Sunrise06:12
Sunset19:04
Tuesday 8/9 Partly cloudy
21°18°25%⌄
Wind15 mph NW
Gusts20 mph
UV index5 – Moderate
Precip chance25%
Sunrise06:13
Sunset19:02
Wednesday 9/9 Sunny
23°18°7%⌄
Wind14 mph S
Gusts25 mph
UV index6 – High
Precip chance7%
Sunrise06:14
Sunset19:00
Thursday 10/9 Mostly cloudy
26°20°0.3 mm⌄
Wind15 mph SW
Gusts24 mph
UV index7 – High
Precip chance38%
Sunrise06:15
Sunset18:59
Friday 11/9 Sunny
23°17°10%⌄
Wind17 mph NW
Gusts22 mph
UV index6 – High
Precip chance10%
Sunrise06:16
Sunset18:57
Saturday 12/9 Sunny
17°13°7%⌄
Wind23 mph NW
Gusts25 mph
UV index5 – Moderate
Precip chance7%
Sunrise06:17
Sunset18:55
Sunday 13/9 Rain (climatological)
19°15°4.5 mm⌄
Day≈16–22°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
19°14°20%⌄
Day≈16–22°
Night≈11–17°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
20°15°20%⌄
Day≈17–23°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
19°15°6.9 mm⌄
Day≈16–22°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
17°14°20%⌄
Day≈14–20°
Night≈11–17°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
17°13°20%⌄
Day≈14–20°
Night≈10–16°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
16°13°6.3 mm⌄
Day≈13–19°
Night≈10–16°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
19°15°20%⌄
Day≈16–22°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
21°16°20%⌄
Day≈18–24°
Night≈13–19°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
20°15°6.5 mm⌄
Day≈17–23°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
18°14°20%⌄
Day≈15–21°
Night≈11–17°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
16°13°20%⌄
Day≈13–19°
Night≈10–16°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
14°12°6.3 mm⌄
Day≈11–17°
Night≈9–15°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
16°13°20%⌄
Day≈13–19°
Night≈10–16°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
19°15°20%⌄
Day≈16–22°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
20°15°3.2 mm⌄
Day≈17–23°
Night≈12–18°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
How does a 30-day outlook work?
The first 14 days are a live model forecast. The back half of the month shows the typical range for those dates — useful for planning, not a literal prediction.
First 14 days: a real forecast, blended from NBM, ECMWF and GFS runs. Trust it most inside three days; by the second week treat it as a lean, not a promise.
Rest of the month: past day 14 we stop pretending to forecast and switch to the climate corridor — the range those dates have produced over three decades computed directly for Northwest Harwich, with mild week-to-week wiggle.
Good question for this page: "Is late August usually humid in Chicago?" Bad question: "Do I need an umbrella on the 29th?" — three weeks out no one knows, and that's the honest answer.