Lowell · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Lowell & 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
93°
Sat, Aug 29
Coldest night
64°
Tue, Aug 25
Days with precip
8 / 14
of 14 forecast days
Nicest day
Fri, Sep 4
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
93° 71°
68% precip chance
Sat 5 – Sun 6 Sep
87° 67°
66% precip chance
Sat 12 – Sun 13 Sep
81° 62°
typical range
Sat 19 – Sun 20 Sep
78° 61°
typical range
30 days — Lowell
14 forecast + 16 climatology
Mon · Today Sunny
89°67°3%⌄
Wind6 mph NW
Gusts20 mph
UV index9 – Very high
Precip chance3%
Sunrise06:51
Sunset20:02
Tue · Tomorrow Sunny
90°64°3%⌄
Wind8 mph NE
Gusts26 mph
UV index9 – Very high
Precip chance3%
Sunrise06:51
Sunset20:01
Wednesday 26/8 Sunny
92°68°3.3 mm⌄
Wind6 mph SW
Gusts12 mph
UV index9 – Very high
Precip chance57%
Sunrise06:52
Sunset19:59
Thursday 27/8 Showers
83°71°2.8 mm⌄
Wind9 mph S
Gusts12 mph
UV index6 – High
Precip chance75%
Sunrise06:53
Sunset19:58
Friday 28/8 Showers
88°69°2.5 mm⌄
Wind5 mph S
Gusts12 mph
UV index8 – Very high
Precip chance73%
Sunrise06:54
Sunset19:57
Saturday 29/8 Showers
93°71°0.6 mm⌄
Wind4 mph SE
Gusts14 mph
UV index8 – Very high
Precip chance42%
Sunrise06:54
Sunset19:55
Sunday 30/8 Showers
92°71°2.5 mm⌄
Wind8 mph SW
Gusts14 mph
UV index8 – Very high
Precip chance68%
Sunrise06:55
Sunset19:54
Monday 31/8 Mostly cloudy
91°72°3.2 mm⌄
Wind6 mph S
Gusts17 mph
UV index8 – Very high
Precip chance72%
Sunrise06:56
Sunset19:53
Tuesday 1/9 Fog
89°70°3.0 mm⌄
Wind6 mph NE
Gusts16 mph
UV index8 – Very high
Precip chance64%
Sunrise06:56
Sunset19:51
Wednesday 2/9 Showers
83°70°2.7 mm⌄
Wind11 mph SW
Gusts23 mph
UV index7 – High
Precip chance70%
Sunrise06:57
Sunset19:50
Thursday 3/9 Sunny
88°73°5%⌄
Wind10 mph NW
Gusts26 mph
UV index8 – Very high
Precip chance5%
Sunrise06:58
Sunset19:49
Friday 4/9 Mostly cloudy
82°66°13%⌄
Wind7 mph NE
Gusts21 mph
UV index6 – High
Precip chance13%
Sunrise06:59
Sunset19:47
Saturday 5/9 Showers
87°68°5.0 mm⌄
Wind7 mph S
Gusts18 mph
UV index8 – Very high
Precip chance66%
Sunrise06:59
Sunset19:46
Sunday 6/9 Mostly cloudy
82°67°13%⌄
Wind9 mph NE
Gusts26 mph
UV index6 – High
Precip chance13%
Sunrise07:00
Sunset19:44
Monday 7/9 Rain (climatological)
81°64°4.0 mm⌄
Day≈75–86°
Night≈58–69°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
84°66°20%⌄
Day≈79–90°
Night≈60–71°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈83–94°
Night≈63–74°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
83°65°2.9 mm⌄
Day≈77–88°
Night≈60–70°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
78°62°20%⌄
Day≈73–84°
Night≈57–68°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
77°62°20%⌄
Day≈72–83°
Night≈56–67°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
81°64°5.7 mm⌄
Day≈75–86°
Night≈58–69°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
84°65°20%⌄
Day≈78–89°
Night≈60–71°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
86°67°20%⌄
Day≈80–91°
Night≈61–72°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
89°69°6.4 mm⌄
Day≈84–94°
Night≈63–74°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
87°67°20%⌄
Day≈81–92°
Night≈62–73°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
81°64°20%⌄
Day≈75–86°
Night≈58–69°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
76°61°5.1 mm⌄
Day≈70–81°
Night≈55–66°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
78°62°20%⌄
Day≈73–83°
Night≈57–67°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
83°65°20%⌄
Day≈78–89°
Night≈60–71°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
84°66°7.0 mm⌄
Day≈79–90°
Night≈60–71°
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 Lowell, 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.