Observed 6:15 AM MDT at KMNH

Larkspur, CO weather

Clear and 48°9°, gusts to 37 mph59 km/h today.

Mostly agree

Now 48°9°

Clear · Feels like 43°6°

Feels like: 43°6°; Wind chill from 14 mph22 km/h wind · air 48°9°
Wind: 14 mph22 km/h; From the south. Gusts to 37 mph59 km/h around 1 PM
Dew point: 41°5°; Comfortable · down to 33°1° by 7 PM (dry)
UV index: 0Low; Moderate 11 AM–5 PM · peak 5
Pressure: 30.07 inHg1018 hPa; Steady over the last 3 h

Light rain now, through the next 2 hours.

From forecast models

Next 48 hours

11°6° cooler than this time yesterday (59°15° then, 48°9° now)

Good hours for

Gusts to 37 mph60 km/h today 9 AM–5 PM
Above 60°16° today by 10 AM
High 69°21° today at 3 PM
Below 60°16° tonight after 7 PM
Rain tomorrow from noon (80%, 0.67 in17 mm)

This morningUp to 63°17° by 11 AM · rain chance 10% · gusts to 33 mph53 km/h · Partly cloudy
This afternoonNear 66°19° · gusts to 37 mph60 km/h · Clear
TonightDown to 46°8° by 5 AM · Mostly cloudy
Tomorrow morningNear 47°8° · rain chance 20% · Mostly cloudy
Tomorrow afternoonNear 48°9° · Rain all afternoon (30%)
Tomorrow nightDown to 40°4° by midnight · Rain all night (80%)

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 7a	Mostly cloudy	51°11° (likely 47°8° to 53°12°)	51°11°	10%	14 mph23 km/h from S, gusts 15 mph24 km/h	74%	74%	0
Fri 8a	Sunny	51°11° (likely 50°10° to 54°12°)	51°11°	10%	15 mph24 km/h from S, gusts 18 mph28 km/h	74%	23%	0
Fri 9a	Sunny	55°13° (likely 55°13° to 60°16°)	55°13°	10%	15 mph24 km/h from S, gusts 28 mph44 km/h	64%	17%	1
Fri 10a	Partly sunny	61°16° (likely 59°15° to 64°18°)	61°16°	10%	17 mph27 km/h from SSW, gusts 33 mph54 km/h	50%	25%	2
Fri 11a	Sunny	63°17° (likely 62°17° to 66°19°)	63°17°	10%	20 mph32 km/h from SSW, gusts 33 mph53 km/h	43%	5%	4
Fri 12p	Sunny	66°19° (likely 64°18° to 67°19°)	66°19°	0%	20 mph32 km/h from SSW, gusts 33 mph54 km/h	37%	1%	5
Fri 1p	Sunny	67°19° (likely 66°19° to 68°20°)	67°19°	0%	20 mph32 km/h from SSW, gusts 37 mph59 km/h	33%	0%	5
Fri 2p	Sunny	68°20° (likely 66°19° to 69°21°)	68°20°	0%	21 mph34 km/h from SSW, gusts 36 mph59 km/h	32%	4%	5
Fri 3p	Sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	20 mph32 km/h from SSW, gusts 34 mph55 km/h	30%	10%	4
Fri 4p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	18 mph29 km/h from SSW, gusts 28 mph45 km/h	29%	8%	3
Fri 5p	Sunny	66°19° (likely 63°17° to 67°19°)	66°19°	0%	15 mph24 km/h from SSW, gusts 24 mph39 km/h	30%	7%	2
Fri 6p	Mostly clear	63°17° (likely 59°15° to 63°17°)	63°17°	0%	12 mph19 km/h from SSW, gusts 24 mph39 km/h	34%	65%	0
Fri 7p	Mostly clear	57°14° (likely 55°13° to 58°14°)	57°14°	0%	10 mph16 km/h from SSW, gusts 13 mph20 km/h	40%	74%	0
Fri 8p	Partly cloudy	55°13° (likely 52°11° to 57°14°)	55°13°	0%	9 mph14 km/h from SSW, gusts 11 mph18 km/h	43%	80%	0
Fri 9p	Partly cloudy	53°12° (likely 50°10° to 56°13°)	53°12°	0%	9 mph14 km/h from SSW, gusts 8 mph13 km/h	46%	42%	0
Fri 10p	Mostly clear	52°11° (likely 48°9° to 53°12°)	52°11°	0%	8 mph13 km/h from SSW, gusts 8 mph13 km/h	48%	36%	0
Fri 11p	Cloudy	50°10° (likely 48°9° to 52°11°)	47°8°	0%	7 mph11 km/h from SSW, gusts 10 mph16 km/h	50%	96%	0
Sat 12a	Cloudy	50°10° (likely 47°8° to 51°11°)	48°9°	0%	6 mph10 km/h from SSW, gusts 8 mph13 km/h	54%	94%	0
Sat 1a	Partly cloudy	49°9° (likely 46°8° to 51°11°)	47°8°	0%	5 mph8 km/h from SSW, gusts 8 mph13 km/h	54%	89%	0
Sat 2a	Partly cloudy	49°9° (likely 46°8° to 50°10°)	47°8°	0%	5 mph8 km/h from SW, gusts 9 mph15 km/h	54%	80%	0
Sat 3a	Partly cloudy	48°9° (likely 46°8° to 49°9°)	47°8°	0%	3 mph5 km/h from WSW, gusts 8 mph13 km/h	56%	74%	0
Sat 4a	Cloudy	47°8° (likely 45°7° to 48°9°)	46°8°	0%	3 mph5 km/h from W, gusts 6 mph10 km/h	58%	77%	0
Sat 5a	Partly cloudy	46°8° (likely 45°7° to 47°8°)	45°7°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	60%	76%	0
Sat 6a	Cloudy	45°7° (likely 44°7° to 47°8°)	43°6°	20%	5 mph8 km/h from NW, gusts 10 mph16 km/h	60%	72%	0
Sat 7a	Cloudy	44°7° (likely 44°7° to 47°8°)	40°4°	20%	7 mph11 km/h from NNW, gusts 13 mph21 km/h	60%	81%	0
Sat 8a	Cloudy	43°6° (likely 43°6° to 47°8°)	38°3°	20%	9 mph14 km/h from N, gusts 14 mph23 km/h	67%	81%	0
Sat 9a	Cloudy	46°8° (likely 45°7° to 48°9°)	40°4°	20%	13 mph21 km/h from N, gusts 15 mph23 km/h	63%	91%	1
Sat 10a	Cloudy	48°9° (likely 45°7° to 49°9°)	42°6°	20%	15 mph24 km/h from N, gusts 15 mph24 km/h	58%	90%	2
Sat 11a	Cloudy	48°9° (likely 45°7° to 49°9°)	42°6°	20%	14 mph23 km/h from NNE, gusts 14 mph23 km/h	58%	88%	3
Sat 12p	Cloudy	48°9° (likely 44°7° to 50°10°)	42°6°	30%, 0.05 in1.3 mm	14 mph23 km/h from NNE, gusts 17 mph27 km/h	60%	84%	4
Sat 1p	Cloudy	48°9° (likely 43°6° to 50°10°)	43°6°	30%, 0.05 in1.3 mm	13 mph21 km/h from NNE, gusts 17 mph27 km/h	60%	85%	3
Sat 2p	Cloudy	49°9° (likely 42°6° to 50°10°)	44°7°	30%, 0.05 in1.3 mm	12 mph19 km/h from NNE, gusts 15 mph24 km/h	56%	89%	2
Sat 3p	Showers	48°9° (likely 41°5° to 48°9°)	43°6°	30%, 0.05 in1.3 mm	10 mph16 km/h from NNE, gusts 14 mph22 km/h	60%	91%	1
Sat 4p	Showers	48°9° (likely 40°4° to 48°9°)	44°7°	30%, 0.05 in1.3 mm	8 mph13 km/h from NNE, gusts 12 mph19 km/h	58%	92%	1
Sat 5p	Snow	47°8° (likely 37°3° to 47°8°)	44°7°	30%, 0.05 in1.3 mm	7 mph11 km/h from NNE, gusts 9 mph15 km/h	63%	98%	0
Sat 6p	Showers	44°7° (likely 36°2° to 44°7°)	41°5°	80%, 0.05 in1.3 mm	6 mph10 km/h from NNE, gusts 7 mph12 km/h	68%	98%	0
Sat 7p	Cloudy	43°6° (likely 36°2° to 43°6°)	41°5°	80%, 0.05 in1.3 mm	3 mph5 km/h from NNE, gusts 7 mph11 km/h	67%	96%	0
Sat 8p	Cloudy	42°6° (likely 36°2° to 42°6°)	42°6°	80%, 0.05 in1.3 mm	2 mph3 km/h from NNE, gusts 6 mph10 km/h	73%	91%	0
Sat 9p	Showers	42°6° (likely 36°2° to 42°6°)	42°6°	80%, 0.05 in1.3 mm	2 mph3 km/h from NNE, gusts 4 mph7 km/h	76%	82%	0
Sat 10p	Cloudy	42°6° (likely 36°2° to 42°6°)	42°6°	80%, 0.05 in1.3 mm	2 mph3 km/h from NNE, gusts 4 mph6 km/h	79%	82%	0
Sat 11p	Cloudy	41°5° (likely 36°2° to 41°5°)	41°5°	80%, 0.05 in1.3 mm	1 mph2 km/h from N, gusts 4 mph6 km/h	82%	85%	0
Sun 12a	Cloudy	40°4° (likely 36°2° to 41°5°)	40°4°	60%, 0.01 in0.3 mm	1 mph2 km/h from N, gusts 4 mph6 km/h	85%	87%	0
Sun 1a	Showers	40°4° (likely 35°2° to 42°6°)	40°4°	60%, 0.01 in0.3 mm	1 mph2 km/h from NW, gusts 6 mph9 km/h	85%	69%	0
Sun 2a	Showers	40°4° (likely 34°1° to 43°6°)	40°4°	60%, 0.01 in0.3 mm	1 mph2 km/h from SW, gusts 7 mph11 km/h	89%	63%	0
Sun 3a	Showers	40°4° (likely 34°1° to 43°6°)	40°4°	60%, 0.01 in0.3 mm	1 mph2 km/h from S, gusts 7 mph12 km/h	89%	53%	0
Sun 4a	Showers	40°4° (likely 35°2° to 42°6°)	40°4°	60%, 0.01 in0.3 mm	1 mph2 km/h from S, gusts 7 mph11 km/h	89%	73%	0
Sun 5a	Showers	40°4° (likely 35°2° to 41°5°)	40°4°	60%, 0.01 in0.3 mm	1 mph2 km/h from S, gusts 11 mph18 km/h	89%	59%	0
Sun 6a	Showers	41°5° (likely 35°2° to 43°6°)	41°5°	40%, 0.01 in0.3 mm	1 mph2 km/h from S, gusts 9 mph14 km/h	86%	63%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 23. Mostly sunny. High 69°21°, low 43°6°. Typical 62°17° / 32°0°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 46°8°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 69, with temperatures falling to around 66 in the afternoon. South southwest wind 14 to 21 mph, with gusts as high as 33 mph.
Tonight: Partly cloudy. Low around 43, with temperatures rising to around 46 overnight. West southwest wind 3 to 12 mph, with gusts as high as 18 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
43°6°–51°11°
Typical high / low
62°17° / 32°0°
Wind
24 mph38 km/h, gusts 41 mph65 km/h
UV peak
5
Tomorrow, Oct 24. Showers. High 50°10°, low 37°3°. Typical 62°17° / 32°0°. Rain 0.1 in2.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Snow, 49°9°
  30% chance · 0.3 in7.6 mm
3. Evening
  6 PM–midnight
  Showers, 42°6°
  80% chance · 0.3 in7.6 mm
4. Overnight
  midnight–6 AM
  Showers, 40°4°
  60% chance · 0.06 in1.5 mm
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy. High near 50, with temperatures falling to around 47 in the afternoon. North wind 5 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Night: Rain showers. Cloudy, with a low around 37. North northwest wind 1 to 6 mph. Chance of precipitation is 80%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–52°11°
Low, likely
36°2°–39°4°
Typical high / low
62°17° / 32°0°
Wind
13 mph21 km/h, gusts 25 mph40 km/h
UV peak
4
Sunday, Oct 25. Drizzle. High 55°13°, low 37°3°. Typical 62°17° / 32°0°. Rain 0.08 in2 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 40°5°
  40% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 59°15°
  30% chance · 0.03 in0.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 43°6°
  50% chance · 0.05 in1.3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 38°4°
  50% chance · 0.04 in1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy, with a high near 55. South southeast wind 1 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–61°16°
Low, likely
34°1°–41°5°
Typical high / low
62°17° / 32°0°
Wind
13 mph21 km/h, gusts 20 mph32 km/h
UV peak
5
Monday, Oct 26. Showers. High 55°13°, low 36°2°. Typical 61°16° / 32°0°. Rain 0.05 in1.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 38°3°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Partly sunny, with a high near 55.
Night: Partly cloudy, with a low around 36.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–59°15°
Low, likely
32°0°–41°5°
Typical high / low
61°16° / 32°0°
Wind
10 mph17 km/h, gusts 27 mph43 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 62°17°, low 37°3°. Typical 61°16° / 31°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 62.
Night: Mostly clear, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–66°19°
Low, likely
35°2°–42°6°
Typical high / low
61°16° / 31°−1°
Wind
17 mph27 km/h, gusts 30 mph48 km/h
UV peak
5
Wednesday, Oct 28. Partly sunny. High 61°16°, low 37°3°. Typical 61°16° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 61.
Night: Partly cloudy, with a low around 37.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–64°18°
Low, likely
33°1°–42°6°
Typical high / low
61°16° / 31°−1°
Wind
16 mph25 km/h, gusts 36 mph57 km/h
UV peak
5
Thursday, Oct 29. Partly sunny. High 59°15°, low 37°3°. Typical 60°16° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 59.
Night: Partly cloudy, with a low around 37.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–65°18°
Low, likely
29°−2°–40°4°
Typical high / low
60°16° / 31°−1°
Wind
16 mph26 km/h, gusts 23 mph36 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 61°16°, low 34°1°. Typical 60°16° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 40°4°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–64°18°
Low, likely
30°−1°–40°4°
Typical high / low
60°16° / 30°−1°
Wind
12 mph19 km/h, gusts 25 mph41 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 60°16°, low 38°3°. Typical 60°16° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 37°3°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
53°12°–63°17°
Low, likely
35°2°–42°6°
Typical high / low
60°16° / 30°−1°
Wind
13 mph21 km/h, gusts 24 mph38 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 57°14°, low 38°3°. Typical 59°15° / 30°−1°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  30% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–62°17°
Low, likely
35°2°–42°6°
Typical high / low
59°15° / 30°−1°
Wind
11 mph18 km/h, gusts 28 mph45 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 69°, low 43°.
Tomorrow
32% chance of rain, high 50°, low 37°, cooling off.
Sunday
46% chance of rain, high 55°, low 37°, warming up.
Rest of week
Mostly dry, highs 55–62°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (BOU) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Cherry Creek (CO) near Franktown

11 mi

Below flood stage

Level: 2.4 ft

Reading from Fri 5 AM · NWS gauge page

East Plum Creek (CO) below Castle Rock

13 mi

Below flood stage

Level: 2.1 ft

Reading from Fri 5:45 AM · NWS gauge page

Plum Creek (CO) near Sedalia

15 mi

Below flood stage

Level: 3.5 ft

Reading from Fri 5 AM · NWS gauge page

South Platte River at South Platte

20 mi

Below flood stage

Level: 2.5 ft
Flow: 274 cfs

Reading from Fri 5 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 77% less heating than a typical week.

This week 30Typical 130

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 20
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 8 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 10:00 AM–6:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

CASTLE ROCK · official normals 1991–2020 · records 1893–2025

Oct 23, today vs a typical year

Today’s expected high is 7°4° warmer than typical.

Last 7 days vs normal

—SatOct 17
—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23

Larkspur weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 52 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 27 min less
Golden hour: 5:32–6:26 PM; Morning 7:00–7:54 AM
Blue hour: 6:26–6:36 PM; Morning 6:50–7:00 AM; first light 6:50 AM

Stars tonight? Poor

Clouds most of the night (about 73% cover).

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:28 AM · rises 4:41 PM
Full moon: Oct 25
New moon: Nov 9

Looking southwest from Larkspur. The highest point on the skyline is about 14,100 ft, 28 mi away.Skyline from USGS elevation data, heights drawn up to 2.5× taller. Sky, sun and moon as they are now.

UniColorado Heating & Cooling, a Denver HVAC installer

UniColorado Heating & Cooling installs heat pumps, furnaces and air conditioning across the Front Range. 12,000+ heat pumps installed since 2014.

(303) 250-1000 Check the service area

Larkspur, CO weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Cherry Creek (CO) near Franktown

East Plum Creek (CO) below Castle Rock

Plum Creek (CO) near Sedalia

South Platte River at South Platte

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 23, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon

UniColorado Heating & Cooling, a Denver HVAC installer