As of 3:15 AM

Clear

Feels like

Today93°67°

Wind10mph S

Humidity44%

UV index–

Castle Pines6,558 ft

The high south end of the metro, often the coolest of the thirteen.

The outlook

An Air Quality Alert is in effect until 4 PM today. It will be very hot this afternoon, with highs near 93. Monsoon moisture arrives Tuesday, bringing overcast skies and a chance of rain.

Next 10 hours67°–89°

89°67°

68°Now

68°4 AM

67°5 AM

67°6 AM

70°7 AM

77°8 AM

81°9 AM

85°10 AM

87°11 AM

89°12 PM

The days ahead

Rest of today

through midnight

93°67°

Overcast

Tomorrow

Tue

90°66°

Overcast

Wed

94°62°

Rain

Rest of the week

Thu–Sun

99°61°

Temperatures warming, drizzle Thu

The record high for July 20 is 91°, set in 2018.

2026 is running 5.5° warmer than the archive average so far.

Today is running 7° above the seasonal average for this date.

This heating season is running 17% milder than normal so far.

Right now

Conditions

Wind: mph S
Humidity
Pressure

Minute-by-minute precipitation isn't available for this city right now.

Next 48 hours

Hourly forecast

Mon, Jul 20 → Wed, Jul 22Mountain · midnight starts a new day

Mon, Jul 20Now68°–10 mph

4 AM68°–9 mph

5 AM67°–7 mph

6 AM67°–6 mph

7 AM70°–4 mph

8 AM77°–9 mph

9 AM81°–6 mph

10 AM85°–6 mph

11 AM87°–5 mph

12 PM89°–6 mph

1 PM91°–7 mph

2 PM92°–12 mph

3 PM92°1%11 mph

4 PM93°2%16 mph

5 PM92°4%10 mph

6 PM91°7%13 mph

7 PM88°8%13 mph

8 PM83°9%8 mph

9 PM81°12%8 mph

10 PM80°7%5 mph

11 PM78°5%6 mph

Tue, Jul 2112 AM75°3%9 mph

1 AM73°3%11 mph

2 AM72°1%9 mph

3 AM71°1%7 mph

4 AM70°1%9 mph

5 AM67°1%8 mph

6 AM66°1%7 mph

7 AM69°1%8 mph

8 AM72°1%14 mph

9 AM74°1%13 mph

10 AM77°1%10 mph

11 AM80°1%9 mph

12 PM83°2%8 mph

1 PM86°3%4 mph

2 PM88°4%6 mph

3 PM89°34%14 mph

4 PM90°34%10 mph

5 PM87°34%16 mph

6 PM87°34%15 mph

7 PM84°33%17 mph

8 PM80°33%19 mph

9 PM76°33%16 mph

10 PM73°33%12 mph

11 PM70°33%8 mph

Wed, Jul 2212 AM68°33%8 mph

1 AM68°–6 mph

2 AM67°–6 mph

7-day outlook

The week ahead

Today
Overcast
93°67°
Tue
Overcast · 34% precip
90°66°
Wed
Rain · 64% precip
94°62°
Thu
Drizzle · 89% precip
87°62°
Fri
Drizzle · 67% precip
94°61°
Sat
Drizzle · 28% precip
99°62°
Sun
Rain · 41% precip
99°61°

Sun & Moon

Light of day

sunrise

5:49 AM

sunset

8:22 PM

Daylight

14 hr 33 min

−1 min 28 sec vs yesterday

Moon

Waxing Crescent

Storm tracker

Live radar

Loading 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

10 J/kg

Stable air

Freezing level

17,552 ft

Altitude of the 32°F line

Cloud layers

low 0% · mid 0% · high 0%

Soil temp

67°

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

5,069(-17% vs normal)

Cooling degree-days· Since May 1

265(+46% vs normal)

Year to date

+5.5°warmer than the archive average

The year in temperature

2016–2026 avg

Average temperature each month, with heating and cooling degree-days, averaged across these years. This month is outlined.

July 20, across the years

2017–2025

Each bar is July 20 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 (July 20, archive mean).Neutral dashes: avg low for the same date.

Blended fromOpenWeatherOpen-MeteoNOAA GFSECMWFDWD ICONNWSradar by RainViewerupdated 3:59 AM Denver time

UniColorado installs heat pumps, furnaces, AC, and electrical across Castle Pines and the Denver metro.

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