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Northglenn weather

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Northglenn weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Northglenn…

Northglenn weather in numbers

from 30 years of measured normals

Northglenn swings 75°F across the year, from 88°F highs in July to 13°F lows in January, and May is usually the wettest month in a year that brings about 19 in of precipitation.

Warmest month
July
88°F average high
Coldest month
January
13°F average low
Wettest month
May
19 in a year
Below freezing
5 months
January, February, March, November and December
Comfortable
2 months
April and October
Residents
39,000
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The weather map: all three models at once

NWS, American, European side by side around Northglenn and nearby towns.Live rain radar →
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Northglenn hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Northglenn 10-day forecast, out to 14 days

where the models agree, and where they split

Northglenn, Colorado (CO) is at its warmest in Jul (average highs near 88°F) and coldest in Jan (lows around 13°F), with roughly 19 in of precipitation across the year. Below, compare what NWS, American, European forecast for Northglenn 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.

Northglenn climate by month

average daytime high and overnight low across a typical year
Jan
34°
13°
Feb
43°
17°
Mar
50°
24°
Apr
62°
34°
May
70°
45°
Jun
81°
55°
Jul
88°
60°
Aug
87°
61°
Sep
83°
53°
Oct
69°
41°
Nov
50°
27°
Dec
47°
25°

Which forecast is most accurate in Northglenn?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
84
/100rank #1
88±1.2°F94±1.9 mph7184% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
81
/100rank #2
85±1.5°F89±3.3 mph7184% 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.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Northglenn today?
On this page we show what NWS, American, European each forecast for Northglenn 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 Northglenn today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Northglenn 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 Northglenn?
Over the last 30 days, the European model has been the most accurate for Northglenn (CheckWeather Score 84/100), ahead of the American at 81. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Northglenn?
July is typically the warmest month in Northglenn, with average highs around 88°F.
How cold does Northglenn get?
The coldest month in Northglenn is January, when overnight lows average about 13°F.
How much rain does Northglenn get?
Northglenn sees roughly 19 in of precipitation a year, with May usually the wettest month.

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