Clear
Centennial5,823 ft
South-central suburbs on the gentle Palmer Divide rise.
The outlook
Rain chances increase significantly this evening and will be highest Saturday with locally heavy downpours possible. Temperatures will be warm today and Saturday, then turn cooler Sunday.
The days ahead
Overnight
into the morning
Overcast
Tomorrow
Sat
Rain · colder
Sun
Rain · sharply colder
Rest of the week
Mon–Thu
Holding steady, rain Thu
2026 is running 5.2° warmer than the archive average so far.
The record high for September 18 is 91°, set in 2021.
This heating season is running 21% milder than normal so far.
Today loses 2 min 32 sec of daylight against yesterday.
Right now
Conditions
- Wind
- mph S
- Humidity
- Pressure
- UV index
- 0Low
- Visibility
- 6 mi
- Dew point
- 53°
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°60°
Rain · 76% precip
- Sat77°56°
Rain · 67% precip
- Sun71°53°
Rain · 63% precip
- Mon75°53°
Drizzle · 33% precip
- Tue79°55°
Rain · 38% precip
- Wed75°57°
Drizzle
- Thu80°57°
Rain · 57% precip
Sun & Moon
Light of day
sunrise
6:43 AM
sunset
7:02 PM
Daylight
12 hr 19 min
−2 min 32 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
230 J/kg
Stable air
Freezing level
15,026 ft
Altitude of the 32°F line
Cloud layers
low 0% · mid 98% · high 0%
Soil temp
58°
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
4,237(-21% vs normal)
Cooling degree-days· Since May 1
1,104(+37% vs normal)
Year to date
+5.2°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 Centennial and the Denver metro.