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CheckWeather USJohnson City
Forecast confidence: Medium · models disagree by 6°F

Johnson City weather

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Light drizzle,rain likely tomorrow

NWS, the American and the European model put Johnson City's high today between 85° and 91°, a 6° split. Tomorrow looks showers around 85°, with a 95% chance of rain.

87°71°
85°69°
81°66°
85°63°
87°64°
86°67°
Todaysplit ±6°Tomorrowsplit ±4°Mondaymodels agreeTuesdaymodels agreeWednesdaysplit ±5°Thursdaysplit ±5°
NWSNational Blend (NBM)
91°
Showers
Today 91°·Low 70°·Rain 34%
AmericanNOAA GFS
85°
Light drizzle
Today 85°·Low 70°·Rain 34%
EuropeanECMWF
86°
Light drizzle
Today 86°·Low 74°·Rain 80%

The weather map: all three models at once

NWS, American, European side by side around Johnson City and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Light drizzle
87° 71°
±6°
Tomorrow
Showers
85° 69°
±4°
Mon
Light drizzle
81° 66°
models agree
Tue
Cloudy
85° 63°
models agree
Wed
Mostly clear
87° 64°
±5°
Thu
Drizzle
86° 67°
±5°
Fri
Drizzle
82° 67°
±6°
Sat
Light drizzle
86° 65°
models agree
Sun
Light drizzle
86° 67°
±4°
Mon
Light drizzle
84° 65°
±15°
Tue
Heavy drizzle
82° 62°
±14°
Wed
Light drizzle
72° 60°
±8°
Thu
Drizzle
76° 59°
±6°
Fri
Light drizzle
75° 60°
models agree

Johnson City, TN is at its warmest in Jul (average highs near 87°F) and coldest in Jan (lows around 31°F), with roughly 44 in of precipitation across the year. Below, compare what NWS, American, European forecast for Johnson City right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Johnson City climate by month

average daytime high and overnight low across a typical year
Jan
48°
31°
Feb
57°
37°
Mar
60°
39°
Apr
68°
47°
May
75°
55°
Jun
82°
61°
Jul
87°
66°
Aug
84°
64°
Sep
80°
59°
Oct
70°
49°
Nov
60°
41°
Dec
51°
34°

Which forecast is most accurate in Johnson City?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
92
/100rank #1
91±0.9°F96±1.3 mph8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
64
/100rank #2
85±1.5°F94±1.9 mph1855% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±6°85° to 91°±46%34% to 80% chance
Tomorrow±4°83° to 87°±75%20% to 95% chance
Mon±3°79° to 82°±12%24% to 36% chance
Tue±4°83° to 87°±25%0% to 25% chance
Wed±5°84° to 89°±22%0% to 22% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Johnson City

today, local time
Sunrise
07:04
Sunset
19:51
Daylight
12h 47m

Common questions

What's the weather in Johnson City today?
On this page we show what NWS, American, European each forecast for Johnson City today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Johnson City today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Johnson City and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Johnson City?
Over the last 30 days, the European model has been the most accurate for Johnson City (CheckWeather Score 92/100), ahead of the American at 64. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Johnson City?
July is typically the warmest month in Johnson City, with average highs around 87°F.
How cold does Johnson City get?
The coldest month in Johnson City is January, when overnight lows average about 31°F.
How much rain does Johnson City get?
Johnson City sees roughly 44 in of precipitation a year, with September usually the wettest month.

Nearby

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