Mount Cashel · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Mount Cashel & 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
80°
Tue, Aug 25
Coldest night
48°
Sun, Sep 6
Days with precip
7 / 14
of 14 forecast days
Nicest day
Mon, Aug 31
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
71° 58°
91% precip chance
Sat 5 – Sun 6 Sep
62° 48°
58% precip chance
Sat 12 – Sun 13 Sep
55° 45°
typical range
Sat 19 – Sun 20 Sep
53° 44°
typical range
30 days — Mount Cashel
14 forecast + 16 climatology
Mon · Today Mostly cloudy
72°60°0.2 mm⌄
Wind15 mph S
Gusts29 mph
UV index6 – High
Precip chance31%
Sunrise06:08
Sunset19:57
Tue · Tomorrow Showers
80°65°11.8 mm⌄
Wind15 mph SW
Gusts25 mph
UV index6 – High
Precip chance90%
Sunrise06:10
Sunset19:55
Wednesday 26/8 Mostly cloudy
75°63°1.2 mm⌄
Wind12 mph W
Gusts25 mph
UV index6 – High
Precip chance69%
Sunrise06:11
Sunset19:53
Thursday 27/8 Sunny
75°60°1.3 mm⌄
Wind13 mph W
Gusts26 mph
UV index3 – Moderate
Precip chance57%
Sunrise06:12
Sunset19:51
Friday 28/8 Sunny
76°59°9%⌄
Wind10 mph W
Gusts26 mph
UV index6 – High
Precip chance9%
Sunrise06:14
Sunset19:49
Saturday 29/8 Showers
65°59°2.2 mm⌄
Wind14 mph S
Gusts33 mph
UV index4 – Moderate
Precip chance81%
Sunrise06:15
Sunset19:47
Sunday 30/8 Showers
71°58°15.5 mm⌄
Wind13 mph SE
Gusts27 mph
UV index6 – High
Precip chance91%
Sunrise06:16
Sunset19:45
Monday 31/8 Mostly cloudy
68°53°13%⌄
Wind13 mph W
Gusts26 mph
UV index5 – Moderate
Precip chance13%
Sunrise06:18
Sunset19:43
Tuesday 1/9 Showers
58°55°3.2 mm⌄
Wind12 mph S
Gusts25 mph
UV index3 – Moderate
Precip chance84%
Sunrise06:19
Sunset19:42
Wednesday 2/9 Mostly cloudy
60°49°22%⌄
Wind13 mph W
Gusts32 mph
UV index4 – Moderate
Precip chance22%
Sunrise06:20
Sunset19:40
Thursday 3/9 Partly cloudy
56°49°27%⌄
Wind11 mph N
Gusts18 mph
UV index4 – Moderate
Precip chance27%
Sunrise06:22
Sunset19:38
Friday 4/9 Showers
59°48°5.1 mm⌄
Wind6 mph S
Gusts13 mph
UV index4 – Moderate
Precip chance83%
Sunrise06:23
Sunset19:36
Saturday 5/9 Fog
62°50°28%⌄
Wind9 mph SE
Gusts18 mph
UV index5 – Moderate
Precip chance28%
Sunrise06:24
Sunset19:34
Sunday 6/9 Showers
52°48°0.5 mm⌄
Wind17 mph N
Gusts27 mph
UV index3 – Moderate
Precip chance58%
Sunrise06:26
Sunset19:32
Monday 7/9 Rain (climatological)
59°48°10.1 mm⌄
Day≈53–64°
Night≈42–53°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
57°47°20%⌄
Day≈52–63°
Night≈42–52°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
63°50°20%⌄
Day≈57–68°
Night≈45–56°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
61°49°5.0 mm⌄
Day≈56–66°
Night≈44–55°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
54°45°20%⌄
Day≈49–59°
Night≈40–50°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
54°45°20%⌄
Day≈48–59°
Night≈39–50°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
55°46°5.0 mm⌄
Day≈49–60°
Night≈40–51°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
58°47°20%⌄
Day≈52–63°
Night≈42–53°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
61°49°20%⌄
Day≈55–66°
Night≈44–54°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
60°49°8.3 mm⌄
Day≈55–65°
Night≈43–54°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
56°46°20%⌄
Day≈51–62°
Night≈41–52°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
55°45°20%⌄
Day≈49–60°
Night≈40–51°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
53°45°11.9 mm⌄
Day≈48–59°
Night≈39–50°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
52°44°20%⌄
Day≈47–58°
Night≈38–49°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
57°47°20%⌄
Day≈51–62°
Night≈41–52°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
61°49°6.8 mm⌄
Day≈56–67°
Night≈44–55°
Precip≈3.5 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 Mount Cashel, 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.