Mostly cloudy
Highlands Ranch5,702 ft
High suburban shelf south of the city.
The outlook
Showers and thunderstorms are increasing today, with a higher chance for locally heavy rain Saturday. Temperatures will be warm through Saturday before becoming more seasonal Sunday.
The days ahead
Rest of today
through midnight
Rain
Tomorrow
Sat
Rain · colder
Sun
Rain · colder
Rest of the week
Mon–Thu
Temperatures warming, rain Thu
2026 is running 5.5° warmer than the archive average so far.
The record high for September 18 is 91°, set in 2018.
This heating season is running 21% milder than normal so far.
Today loses 2 min 31 sec of daylight against yesterday.
Right now
Conditions
- Wind
- mph NE
- Humidity
- Pressure
- UV index
- 6Moderate
- Visibility
- 6 mi
- Dew point
- 52°
Next hour
Minute-by-minute
No precipitation expected in the next hour.
Next 48 hours
Hourly forecast
Fri, Sep 18 → Sun, Sep 20Mountain · midnight starts a new day
7-day outlook
The week ahead
- Today83°62°
Rain · 58% precip
- Sat78°57°
Rain · 71% precip
- Sun73°52°
Rain · 71% precip
- Mon75°53°
Rain · 29% precip
- Tue77°54°
Rain · 60% precip
- Wed77°54°
Rain · 46% precip
- Thu81°57°
Rain · 62% precip
Sun & Moon
Light of day
sunrise
6:43 AM
sunset
7:03 PM
Daylight
12 hr 19 min
−2 min 31 sec vs yesterday
Moon
First Quarter
Storm tracker
Live radar
Radar by RainViewer · 7-day precipitation forecast by Open-Meteo · basemap OpenFreeMap. Radar covers the past two hours plus a 30-minute nowcast; the 7-day layer is a precipitation forecast.
AdvancedAtmospheric detail & vertical profile
Atmospheric readings
Instability
250 J/kg
Stable air
Freezing level
15,486 ft
Altitude of the 32°F line
Cloud layers
low 0% · mid 5% · high 100%
Soil temp
90°
Ground surface
Vertical profile
Temperature and wind from the surface up through the upper atmosphere.
Climate
How today sits against the record
Open-Meteo archive, 2016–2026
This season's pace
A running total of heating and cooling demand in degree-days, measured against the multi-year average. It is a sum of degrees, not a count of days.
Heating degree-days· Since Oct 1
4,437(-21% vs normal)
Cooling degree-days· Since May 1
1,023(+41% vs normal)
Year to date
+5.5°warmer than the archive average
The year in temperature
2016–2026 avgAverage temperature each month, with heating and cooling degree-days, averaged across these years. This month is outlined.
September 18, across the years
2017–2025Each bar is September 18 only: observed low at the bottom, high at the top. Accent fill is 2026. Dashed lines are the archive’s typical high/low for that date.
Legend
- Frosted bars = other years
- Solid accent = 2026
- Accent dashes: avg high (September 18, archive mean).Neutral dashes: avg low for the same date.
UniColorado installs heat pumps, furnaces, AC, and electrical across Highlands Ranch and the Denver metro.