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Johnston weather

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The weather map: all three models at once

NWS, American, European side by side around Johnston and nearby towns.Live rain radar →
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Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split

Johnston, RI is at its warmest in Jul (average highs near 84°F) and coldest in Feb (lows around 26°F), with roughly 56 in of precipitation across the year. Below, compare what NWS, American, European forecast for Johnston 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.

Johnston climate by month

average daytime high and overnight low across a typical year
Jan
41°
28°
Feb
43°
26°
Mar
49°
33°
Apr
60°
41°
May
69°
50°
Jun
77°
59°
Jul
84°
68°
Aug
79°
63°
Sep
74°
58°
Oct
65°
49°
Nov
52°
37°
Dec
44°
30°

Which forecast is most accurate in Johnston?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
90
/100rank #1
97±0.3°F98±0.6 mph7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
70
/100rank #2
86±1.4°F94±1.9 mph3665% 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.

Common questions

What's the weather in Johnston today?
On this page we show what NWS, American, European each forecast for Johnston 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 Johnston today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Johnston 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 Johnston?
Over the last 30 days, the European model has been the most accurate for Johnston (CheckWeather Score 90/100), ahead of the American at 70. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Johnston?
July is typically the warmest month in Johnston, with average highs around 84°F.
How cold does Johnston get?
The coldest month in Johnston is February, when overnight lows average about 26°F.
How much rain does Johnston get?
Johnston sees roughly 56 in of precipitation a year, with January usually the wettest month.

Nearby

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