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Every US forecast, compared
CheckWeather US›Rosemont

Rosemont weather

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NWSNational Blend (NBM)
77°
Clear
Feels 75° · Wind 8 mph · Humidity 44%
AmericanNOAA GFS
76°
Clear
Feels 74° · Wind 8 mph · Humidity 47%
EuropeanECMWF
76°
Clear
Feels 72° · Wind 9 mph · Humidity 38%

Latest for Rosemont: NWS (National Blend (NBM)): 77° Clear · American (NOAA GFS): 76° Clear · European (ECMWF): 76° Clear.

The weather map: all three models at once

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

consensus of the three models

7-day forecast

where the models agree, and where they split

Rosemont, CA is at its warmest in Jul (average highs near 100°F) and coldest in Feb (lows around 40°F), with roughly 34 in of precipitation across the year. Below, compare what NWS, American, European forecast for Rosemont right now, and see exactly where they disagree.

Rosemont climate by month

average daytime high and overnight low across a typical year
Jan
56°
41°
Feb
57°
40°
Mar
60°
43°
Apr
70°
46°
May
80°
52°
Jun
90°
58°
Jul
100°
63°
Aug
95°
62°
Sep
89°
59°
Oct
81°
54°
Nov
63°
43°
Dec
58°
42°

Which forecast is most accurate in the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
Behind Apple Weather, Windy
88
/100rank #1
85±1.5°F96±1.2 mph8592% hitECMWF — European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
Behind Windy & many free apps
74
/100rank #2
82±1.8°F92±2.6 mph5374% 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 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.

Common questions

What's the weather in Rosemont today?
On this page we show what NWS, American, European each forecast for Rosemont 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 Rosemont today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Rosemont 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 Rosemont?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Rosemont forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Rosemont?
July is typically the warmest month in Rosemont, with average highs around 100°F.
How cold does Rosemont get?
The coldest month in Rosemont is February, when overnight lows average about 40°F.
How much rain does Rosemont get?
Rosemont sees roughly 34 in of precipitation a year, with January usually the wettest month.

The forecasts Americans check

The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.

NWSNational Weather Service
Open model · shown above ✓AWAccuWeather
Closed model · open ↗↗TWCThe Weather Channel
Closed model · open ↗↗

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