Downtown St. John's · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Downtown St. John's & 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
77°
Thu, Aug 27
Coldest night
42°
Thu, Sep 3
Days with precip
4 / 14
of 14 forecast days
Nicest day
Thu, Aug 27
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
67° 56°
83% precip chance
Sat 5 – Sun 6 Sep
58° 45°
68% precip chance
Sat 12 – Sun 13 Sep
61° 42°
typical range
Sat 19 – Sun 20 Sep
60° 43°
typical range
30 days — Downtown St. John's
14 forecast + 16 climatology
Thu · Today Sunny
77°59°9%⌄
Wind9 mph W
Gusts20 mph
UV index3 – Moderate
Precip chance9%
Sunrise06:12
Sunset19:51
Fri · Tomorrow Mostly cloudy
76°60°14%⌄
Wind10 mph W
Gusts25 mph
UV index6 – High
Precip chance14%
Sunrise06:14
Sunset19:49
Saturday 29/8 Mostly cloudy
64°60°2.1 mm⌄
Wind8 mph S
Gusts26 mph
UV index4 – Moderate
Precip chance83%
Sunrise06:15
Sunset19:47
Sunday 30/8 Mostly cloudy
67°56°22%⌄
Wind10 mph NW
Gusts21 mph
UV index4 – Moderate
Precip chance22%
Sunrise06:16
Sunset19:45
Monday 31/8 Mostly cloudy
69°53°0.2 mm⌄
Wind17 mph W
Gusts29 mph
UV index6 – High
Precip chance25%
Sunrise06:18
Sunset19:43
Tuesday 1/9 Sunny
60°49°15%⌄
Wind12 mph NW
Gusts24 mph
UV index4 – Moderate
Precip chance15%
Sunrise06:19
Sunset19:41
Wednesday 2/9 Showers
55°44°0.8 mm⌄
Wind10 mph NE
Gusts17 mph
UV index4 – Moderate
Precip chance60%
Sunrise06:20
Sunset19:39
Thursday 3/9 Sunny
58°42°9%⌄
Wind7 mph SE
Gusts16 mph
UV index4 – Moderate
Precip chance9%
Sunrise06:22
Sunset19:37
Friday 4/9 Sunny
59°44°10%⌄
Wind8 mph SE
Gusts17 mph
UV index4 – Moderate
Precip chance10%
Sunrise06:23
Sunset19:35
Saturday 5/9 Mostly cloudy
58°47°1.4 mm⌄
Wind15 mph NE
Gusts21 mph
UV index3 – Moderate
Precip chance68%
Sunrise06:24
Sunset19:33
Sunday 6/9 Sunny
58°45°0.2 mm⌄
Wind11 mph N
Gusts20 mph
UV index4 – Moderate
Precip chance21%
Sunrise06:26
Sunset19:31
Monday 7/9 Sunny
62°46°11%⌄
Wind14 mph S
Gusts22 mph
UV index5 – Moderate
Precip chance11%
Sunrise06:27
Sunset19:29
Tuesday 8/9 Showers
62°52°35.2 mm⌄
Wind24 mph SE
Gusts48 mph
UV index4 – Moderate
Precip chance92%
Sunrise06:28
Sunset19:27
Wednesday 9/9 Showers
73°60°0.8 mm⌄
Wind15 mph S
Gusts38 mph
UV index6 – High
Precip chance53%
Sunrise06:30
Sunset19:25
Thursday 10/9 Rain (climatological)
52°41°10.4 mm⌄
Day≈46–57°
Night≈35–46°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
58°44°20%⌄
Day≈53–64°
Night≈39–50°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
61°46°20%⌄
Day≈55–66°
Night≈41–52°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
54°42°10.7 mm⌄
Day≈48–59°
Night≈37–47°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
51°40°20%⌄
Day≈45–56°
Night≈35–45°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
50°40°20%⌄
Day≈44–55°
Night≈34–45°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
51°40°8.0 mm⌄
Day≈46–56°
Night≈35–46°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
52°41°20%⌄
Day≈47–58°
Night≈36–46°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
56°43°20%⌄
Day≈50–61°
Night≈38–49°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
60°46°11.9 mm⌄
Day≈55–66°
Night≈41–51°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
55°43°20%⌄
Day≈50–61°
Night≈37–48°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
53°41°20%⌄
Day≈47–58°
Night≈36–47°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
50°40°7.1 mm⌄
Day≈44–55°
Night≈34–45°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
50°40°20%⌄
Day≈44–55°
Night≈34–45°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
52°41°20%⌄
Day≈47–57°
Night≈35–46°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
58°44°5.0 mm⌄
Day≈53–63°
Night≈39–50°
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 Downtown St. John's, 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.