Johnson City · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Johnson City & 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°
Mon, Aug 31
Coldest night
61°
Fri, Sep 11
Days with precip
8 / 14
of 14 forecast days
Nicest day
Fri, Sep 11
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
81° 70°
89% precip chance
Sat 12 – Sun 13 Sep
80° 65°
5% precip chance
Sat 19 – Sun 20 Sep
73° 60°
typical range
Sat 26 – Sun 27 Sep
73° 59°
typical range
30 days — Johnson City
14 forecast + 16 climatology
Mon · Today Sunny
93°67°3%⌄
Wind7 mph NW
Gusts19 mph
UV index9 – Very high
Precip chance3%
Sunrise07:00
Sunset19:59
Tue · Tomorrow Sunny
86°71°4%⌄
Wind7 mph NW
Gusts17 mph
UV index9 – Very high
Precip chance4%
Sunrise07:01
Sunset19:57
Wednesday 2/9 Sunny
88°72°5.8 mm⌄
Wind8 mph SE
Gusts16 mph
UV index9 – Very high
Precip chance65%
Sunrise07:01
Sunset19:56
Thursday 3/9 Sunny
88°69°6.0 mm⌄
Wind8 mph SE
Gusts15 mph
UV index9 – Very high
Precip chance70%
Sunrise07:02
Sunset19:55
Friday 4/9 Sunny
85°69°4.7 mm⌄
Wind7 mph NW
Gusts16 mph
UV index9 – Very high
Precip chance64%
Sunrise07:03
Sunset19:53
Saturday 5/9 Showers
81°70°18.6 mm⌄
Wind6 mph NW
Gusts14 mph
UV index6 – High
Precip chance86%
Sunrise07:04
Sunset19:52
Sunday 6/9 Showers
79°71°10.1 mm⌄
Wind5 mph NW
Gusts13 mph
UV index7 – High
Precip chance89%
Sunrise07:04
Sunset19:50
Monday 7/9 Fog
72°65°4.7 mm⌄
Wind6 mph SE
Gusts15 mph
UV index5 – Moderate
Precip chance85%
Sunrise07:05
Sunset19:49
Tuesday 8/9 Mostly cloudy
74°62°1.0 mm⌄
Wind5 mph SE
Gusts14 mph
UV index5 – Moderate
Precip chance65%
Sunrise07:06
Sunset19:47
Wednesday 9/9 Showers
78°69°2.3 mm⌄
Wind11 mph W
Gusts21 mph
UV index6 – High
Precip chance67%
Sunrise07:07
Sunset19:46
Thursday 10/9 Sunny
74°64°12%⌄
Wind8 mph N
Gusts12 mph
UV index6 – High
Precip chance12%
Sunrise07:08
Sunset19:44
Friday 11/9 Sunny
75°61°6%⌄
Wind6 mph N
Gusts14 mph
UV index6 – High
Precip chance6%
Sunrise07:08
Sunset19:43
Saturday 12/9 Sunny
77°65°5%⌄
Wind6 mph N
Gusts16 mph
UV index7 – High
Precip chance5%
Sunrise07:09
Sunset19:41
Sunday 13/9 Sunny
80°66°4%⌄
Wind4 mph NW
Gusts14 mph
UV index7 – High
Precip chance4%
Sunrise07:10
Sunset19:40
Monday 14/9 Rain (climatological)
73°61°8.5 mm⌄
Day≈67–78°
Night≈55–66°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
76°63°20%⌄
Day≈71–82°
Night≈58–68°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
81°66°20%⌄
Day≈76–87°
Night≈61–72°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
75°62°7.3 mm⌄
Day≈70–81°
Night≈57–68°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
71°60°20%⌄
Day≈66–77°
Night≈55–66°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
73°61°20%⌄
Day≈67–78°
Night≈55–66°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
70°60°10.4 mm⌄
Day≈65–76°
Night≈54–65°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
76°63°20%⌄
Day≈70–81°
Night≈57–68°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
76°63°20%⌄
Day≈71–81°
Night≈57–68°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
81°66°15.1 mm⌄
Day≈76–87°
Night≈61–71°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
75°62°20%⌄
Day≈70–81°
Night≈57–68°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
71°60°20%⌄
Day≈65–76°
Night≈54–65°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
73°61°10.4 mm⌄
Day≈67–78°
Night≈56–66°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
70°59°20%⌄
Day≈64–75°
Night≈54–65°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
73°61°20%⌄
Day≈67–78°
Night≈56–66°
Precip≈4.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
78°64°9.7 mm⌄
Day≈72–83°
Night≈58–69°
Precip≈4.6 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 Johnson City, 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.