Observed 11:40 AM EDT at KHPN

Hartsdale, NY weather

Sunny and 55°13°, jacket by 7 PM.

Forecasts agree

Now 55°13°

Sunny

Wind: 6 mph9 km/h; From the northwest. Up to 6 mph9 km/h through 12 AM
Dew point: 36°2°; Comfortable
UV index: 2Low; Moderate until 3 PM · peak 3
Air today: 50Good; EPA forecast · PM2.5 (fine particles)
Pressure: 30.56 inHg1035 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (53°12° then, 54°12° now)

Good hours for

High 61°16° today at 2 PM
Below 50°10° tonight after 9 PM
Low 39°4° tomorrow at 8 AM
Above 50°10° tomorrow by 10 AM

This afternoonUp to 61°16° by 2 PM · Mostly cloudy
TonightDown to 41°5° by 4 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 3 PM · Clear
Tomorrow nightDown to 41°5° by 3 AM · Clear
Monday morningUp to 57°14° by 11 AM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 12p	Cloudy	57°14° (likely 55°13° to 57°14°)	57°14°	0%	3 mph5 km/h from NW, gusts 4 mph7 km/h	45%	78%	2
Sat 1p	Cloudy	58°14° (likely 57°14° to 58°14°)	58°14°	0%	3 mph5 km/h from NW, gusts 5 mph9 km/h	44%	73%	3
Sat 2p	Cloudy	61°16° (likely 58°14° to 61°16°)	61°16°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	36%	64%	3
Sat 3p	Mostly cloudy	61°16° (likely 59°15° to 61°16°)	61°16°	0%	3 mph5 km/h from NW, gusts 7 mph11 km/h	38%	55%	2
Sat 4p	Mostly cloudy	61°16° (likely 59°15° to 61°16°)	61°16°	0%	2 mph3 km/h from NW, gusts 6 mph10 km/h	38%	50%	1
Sat 5p	Partly sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	2 mph3 km/h from NW, gusts 6 mph9 km/h	39%	46%	0
Sat 6p	Partly cloudy	57°14° (likely 54°12° to 57°14°)	57°14°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	47%	45%	0
Sat 7p	Clear	54°12° (likely 52°11° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	54%	31%	0
Sat 8p	Mostly clear	52°11° (likely 49°9° to 52°11°)	52°11°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	56%	8%	0
Sat 9p	Clear	49°9° (likely 46°8° to 50°10°)	49°9°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	63%	0%	0
Sat 10p	Clear	48°9° (likely 46°8° to 49°9°)	48°9°	0%	1 mph2 km/h from NW, gusts 3 mph4 km/h	65%	1%	0
Sat 11p	Clear	46°8° (likely 45°7° to 47°8°)	46°8°	0%	1 mph2 km/h from NW, gusts 3 mph4 km/h	71%	0%	0
Sun 12a	Clear	45°7° (likely 43°6° to 45°7°)	45°7°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	73%	0%	0
Sun 1a	Clear	44°7° (likely 42°6° to 44°7°)	44°7°	0%	2 mph3 km/h from NW, gusts 4 mph6 km/h	73%	0%	0
Sun 2a	Clear	43°6° (likely 42°6° to 43°6°)	43°6°	0%	2 mph3 km/h from NW, gusts 4 mph6 km/h	76%	0%	0
Sun 3a	Clear	42°6° (likely 41°5° to 43°6°)	42°6°	0%	2 mph3 km/h from NW, gusts 5 mph7 km/h	79%	0%	0
Sun 4a	Clear	41°5° (likely 40°4° to 43°6°)	41°5°	0%	2 mph3 km/h from NW, gusts 5 mph9 km/h	82%	0%	0
Sun 5a	Clear	41°5° (likely 39°4° to 41°5°)	41°5°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	82%	7%	0
Sun 6a	Clear	41°5° (likely 37°3° to 42°6°)	41°5°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	79%	11%	0
Sun 7a	Sunny	41°5° (likely 36°2° to 41°5°)	41°5°	0%	3 mph5 km/h from NW, gusts 6 mph10 km/h	79%	11%	0
Sun 8a	Sunny	39°4° (likely 36°2° to 41°5°)	39°4°	0%	3 mph5 km/h from NW, gusts 6 mph10 km/h	89%	9%	0
Sun 9a	Sunny	44°7° (likely 42°6° to 45°7°)	44°7°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	76%	0%	1
Sun 10a	Sunny	51°11° (likely 50°10° to 52°11°)	51°11°	0%	2 mph3 km/h from NW, gusts 6 mph9 km/h	61%	0%	2
Sun 11a	Sunny	56°13° (likely 56°13° to 57°14°)	56°13°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	53%	0%	3
Sun 12p	Sunny	60°16° (likely 60°16° to 60°16°)	60°16°	0%	3 mph5 km/h from NW, gusts 7 mph12 km/h	44%	0%	4
Sun 1p	Sunny	63°17° (likely 62°17° to 63°17°)	63°17°	0%	3 mph5 km/h from W, gusts 7 mph12 km/h	38%	0%	4
Sun 2p	Sunny	63°17° (likely 63°17° to 64°18°)	63°17°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	38%	0%	4
Sun 3p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	34%	0%	3
Sun 4p	Sunny	63°17° (likely 63°17° to 65°18°)	63°17°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	36%	0%	2
Sun 5p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	2 mph3 km/h from SW, gusts 7 mph12 km/h	36%	0%	1
Sun 6p	Clear	59°15° (likely 56°13° to 59°15°)	59°15°	0%	2 mph3 km/h from SW, gusts 6 mph9 km/h	44%	0%	0
Sun 7p	Clear	54°12° (likely 53°12° to 55°13°)	54°12°	0%	1 mph2 km/h from SW, gusts 8 mph14 km/h	54%	0%	0
Sun 8p	Clear	52°11° (likely 51°11° to 53°12°)	52°11°	0%	1 mph2 km/h from SW, gusts 10 mph15 km/h	61%	0%	0
Sun 9p	Clear	50°10° (likely 49°9° to 52°11°)	50°10°	0%	2 mph3 km/h from SW, gusts 10 mph15 km/h	66%	0%	0
Sun 10p	Clear	48°9° (likely 47°8° to 50°10°)	48°9°	0%	2 mph3 km/h from W, gusts 9 mph14 km/h	74%	0%	0
Sun 11p	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	2 mph3 km/h from W, gusts 9 mph14 km/h	79%	0%	0
Mon 12a	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	82%	0%	0
Mon 1a	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	86%	0%	0
Mon 2a	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	89%	0%	0
Mon 3a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	2 mph3 km/h from W, gusts 9 mph14 km/h	92%	0%	0
Mon 4a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	92%	0%	0
Mon 5a	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	92%	1%	0
Mon 6a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	96%	1%	0
Mon 7a	Sunny	39°4° (likely 39°4° to 45°7°)	39°4°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	100%	15%	0
Mon 8a	Sunny	41°5° (likely 41°5° to 47°8°)	41°5°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	92%	12%	0
Mon 9a	Sunny	45°7° (likely 44°7° to 51°11°)	45°7°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	82%	5%	1
Mon 10a	Sunny	51°11° (likely 51°11° to 55°13°)	51°11°	0%	3 mph5 km/h from NW, gusts 8 mph12 km/h	68%	8%	2
Mon 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	3 mph5 km/h from NW, gusts 9 mph14 km/h	57%	11%	3

Days ahead

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

Today, Oct 24. Cloudy. High 61°16°, low 39°4°. Typical 60°16° / 43°6°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Mostly cloudy, 61°16°
  Dry
2. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Today: Partly sunny, with a high near 61. Northwest wind around 3 mph.
Tonight: Mostly clear. Low around 39, with temperatures rising to around 41 overnight. Northwest wind 0 to 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–61°16°
Low, likely
35°2°–39°4°
Typical high / low
60°16° / 43°6°
Wind
6 mph9 km/h, gusts 14 mph23 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 65°18°, low 39°4°. Typical 60°16° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Day: Patchy frost between 8am and 9am. Sunny. High near 65, with temperatures falling to around 63 in the afternoon. Northwest wind around 3 mph.
Night: Clear. Low around 39, with temperatures rising to around 41 overnight. West wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–65°18°
Low, likely
36°2°–40°4°
Typical high / low
60°16° / 42°6°
Wind
7 mph10 km/h, gusts 13 mph22 km/h
UV peak
4
Monday, Oct 26. Sunny. High 68°20°, low 45°7°. Typical 59°15° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Official NWS forecast
Day: Patchy frost before 8am. Sunny. High near 68, with temperatures falling to around 66 in the afternoon. West wind around 5 mph.
Night: Mostly clear. Low around 45, with temperatures rising to around 47 overnight.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
40°4°–45°7°
Typical high / low
59°15° / 42°6°
Wind
8 mph13 km/h, gusts 22 mph36 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 58°14°, low 37°3°. Typical 59°15° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 58.
Night: Mostly clear, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–59°15°
Low, likely
37°3°–46°8°
Typical high / low
59°15° / 42°6°
Wind
10 mph16 km/h, gusts 26 mph41 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 58°14°, low 45°7°. Typical 59°15° / 42°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 58.
Night: Partly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–60°16°
Low, likely
35°2°–45°7°
Typical high / low
59°15° / 42°6°
Wind
7 mph10 km/h, gusts 15 mph24 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 65°18°, low 49°9°. Typical 58°14° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Partly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
45°7°–49°9°
Typical high / low
58°14° / 41°5°
Wind
10 mph16 km/h, gusts 28 mph45 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 67°19°, low 46°8°. Typical 58°14° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Mostly clear, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–71°22°
Low, likely
46°8°–51°11°
Typical high / low
58°14° / 41°5°
Wind
12 mph19 km/h, gusts 28 mph45 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 66°19°, low 48°9°. Typical 58°14° / 41°5°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  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
59°15°–72°22°
Low, likely
46°8°–51°11°
Typical high / low
58°14° / 41°5°
Wind
12 mph19 km/h, gusts 28 mph45 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 65°18°, low 50°10°. Typical 57°14° / 40°4°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 58°14°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 52°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
55°13°–68°20°
Low, likely
40°4°–54°12°
Typical high / low
57°14° / 40°4°
Wind
9 mph14 km/h, gusts 22 mph35 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 62°17°, low 52°11°. Typical 57°14° / 40°4°. Rain 0.08 in2 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  20% 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
52°11°–68°20°
Low, likely
41°5°–58°14°
Typical high / low
57°14° / 40°4°
Wind
9 mph14 km/h, gusts 16 mph26 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 39°.
Tomorrow
Dry, high 65°, low 39°, warming up.
Monday
Dry, high 68°, low 45°, warming up.
Rest of week
Mostly dry, highs 58–67°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (OKX) (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

Hudson River at Piermont (IN MLLW)

5.2 mi

Below flood stage

Level: 4.5 ft

Reading from Sat 10:30 AM · NWS gauge page

Long Island Sound at Rye (IN MLLW)

7.8 mi

Below flood stage

Level: 9.3 ft

Reading from Sat 10:42 AM · NWS gauge page

Hackensack River at Rivervale

9.8 mi

Below flood stage

Level: 1.7 ft
Flow: 41 cfs

Reading from Sat 10:15 AM · NWS gauge page

Hackensack River at West Nyack

10 mi

Below flood stage

Level: 2.5 ft

Reading from Sat 9:45 AM · NWS gauge page

For your home

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

Heating this week

About 71% less heating than a typical week.

This week 30Typical 102

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 22
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 10 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 2:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

WESTCHESTER CO AP · official normals 1991–2020 · records 1948–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−7°−4°SunOct 18
−2°−1°MonOct 19
—TueOct 20
±0°WedOct 21
+1°ThuOct 22
−1°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 44 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 31 min less
Golden hour: 5:23–6:18 PM; Morning 6:59–7:55 AM
Blue hour: 6:18–6:29 PM; Morning 6:48–6:59 AM; first light 6:48 AM

Stars tonight? Fair

Clear 8 PM–6:49 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:27 AM · rises 4:58 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Hartsdale. The highest point on the skyline is about 1,500 ft, 17 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Hartsdale, NY weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Hudson River at Piermont (IN MLLW)

Long Island Sound at Rye (IN MLLW)

Hackensack River at Rivervale

Hackensack River at West Nyack

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon