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
85°
Thu, Sep 3
Coldest night
58°
Tue, Aug 25
Days with precip
8 / 14
of 14 forecast days
Nicest day
Tue, Aug 25
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
80° 65°
80% precip chance
Sat 5 – Sun 6 Sep
78° 69°
87% precip chance
Sat 12 – Sun 13 Sep
70° 60°
typical range
Sat 19 – Sun 20 Sep
71° 60°
typical range
30 days — Johnson City
14 forecast + 16 climatology
Mon · Today Sunny
84°59°4%⌄
Wind8 mph NW
Gusts15 mph
UV index9 – Very high
Precip chance4%
Sunrise06:54
Sunset20:08
Tue · Tomorrow Sunny
77°58°4%⌄
Wind7 mph NW
Gusts17 mph
UV index9 – Very high
Precip chance4%
Sunrise06:55
Sunset20:07
Wednesday 26/8 Showers
75°66°5.6 mm⌄
Wind6 mph SE
Gusts16 mph
UV index9 – Very high
Precip chance75%
Sunrise06:56
Sunset20:06
Thursday 27/8 Mostly cloudy
72°64°8.2 mm⌄
Wind5 mph SE
Gusts17 mph
UV index9 – Very high
Precip chance87%
Sunrise06:57
Sunset20:04
Friday 28/8 Showers
71°63°5.8 mm⌄
Wind4 mph SE
Gusts14 mph
UV index5 – Moderate
Precip chance88%
Sunrise06:57
Sunset20:03
Saturday 29/8 Partly cloudy
80°65°0.8 mm⌄
Wind5 mph SE
Gusts16 mph
UV index6 – High
Precip chance55%
Sunrise06:58
Sunset20:02
Sunday 30/8 Showers
77°68°6.1 mm⌄
Wind5 mph SE
Gusts15 mph
UV index6 – High
Precip chance80%
Sunrise06:59
Sunset20:00
Monday 31/8 Sunny
79°69°11%⌄
Wind8 mph W
Gusts14 mph
UV index7 – High
Precip chance11%
Sunrise07:00
Sunset19:59
Tuesday 1/9 Sunny
81°71°10%⌄
Wind6 mph NW
Gusts15 mph
UV index7 – High
Precip chance10%
Sunrise07:01
Sunset19:57
Wednesday 2/9 Sunny
83°74°1.2 mm⌄
Wind7 mph NW
Gusts15 mph
UV index7 – High
Precip chance57%
Sunrise07:01
Sunset19:56
Thursday 3/9 Sunny
85°74°2.1 mm⌄
Wind5 mph NW
Gusts16 mph
UV index7 – High
Precip chance57%
Sunrise07:02
Sunset19:55
Friday 4/9 Sunny
83°73°0.9 mm⌄
Wind6 mph NW
Gusts14 mph
UV index7 – High
Precip chance48%
Sunrise07:03
Sunset19:53
Saturday 5/9 Showers
78°70°13.2 mm⌄
Wind5 mph S
Gusts16 mph
UV index6 – High
Precip chance87%
Sunrise07:04
Sunset19:52
Sunday 6/9 Fog
74°69°4.2 mm⌄
Wind5 mph SE
Gusts16 mph
UV index5 – Moderate
Precip chance84%
Sunrise07:04
Sunset19:50
Tuesday 8/9 Rain (climatological)
70°61°7.7 mm⌄
Day≈65–76°
Night≈56–66°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
74°63°20%⌄
Day≈69–79°
Night≈58–69°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
79°66°20%⌄
Day≈74–85°
Night≈61–72°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
73°63°6.6 mm⌄
Day≈68–78°
Night≈57–68°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
69°60°20%⌄
Day≈64–75°
Night≈55–66°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
70°61°20%⌄
Day≈65–76°
Night≈56–66°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
68°60°9.5 mm⌄
Day≈63–74°
Night≈54–65°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
74°63°20%⌄
Day≈68–79°
Night≈58–68°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
74°63°20%⌄
Day≈68–79°
Night≈58–68°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
79°66°13.7 mm⌄
Day≈74–84°
Night≈61–72°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
73°63°20%⌄
Day≈68–78°
Night≈57–68°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
69°60°20%⌄
Day≈63–74°
Night≈55–65°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
71°61°9.5 mm⌄
Day≈65–76°
Night≈56–67°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
67°59°20%⌄
Day≈62–73°
Night≈54–65°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
71°61°20%⌄
Day≈65–76°
Night≈56–67°
Precip≈4.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
75°64°8.8 mm⌄
Day≈70–81°
Night≈59–69°
Precip≈4.1 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.