Observed 4:45 PM EDT at KMMU

Summit, NJ weather

Sunny and 59°15°, jacket by 7 PM.

Mostly agree

Now 59°15°

Sunny

Wind: 6 mph9 km/h; From the northeast. Up to 6 mph9 km/h through 5 AM
Dew point: 29°−2°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Air quality: 27Good; Ozone · tomorrow moderate

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 50°10° tonight after 9 PM
Low 36°2° tomorrow at 6 AM
Above 50°10° tomorrow by 10 AM
High 64°18° tomorrow at 3 PM

TonightDown to 37°3° by 4 AM · Partly cloudy
Tomorrow morningUp to 57°14° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 64°18° by 3 PM · Partly cloudy
Tomorrow nightDown to 35°2° by 5 AM · Clear
Sunday morningUp to 59°15° by 11 AM · Clear
Sunday afternoonUp to 68°20° by 3 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 5p	Sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	3 mph5 km/h from NE, gusts 8 mph12 km/h	31%	0%	0
Fri 6p	Clear	58°14° (likely 54°12° to 58°14°)	58°14°	0%	3 mph5 km/h from E, gusts 7 mph12 km/h	32%	6%	0
Fri 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	3 mph5 km/h from E, gusts 6 mph10 km/h	41%	14%	0
Fri 8p	Cloudy	50°10° (likely 47°8° to 50°10°)	50°10°	0%	2 mph3 km/h from SE, gusts 7 mph12 km/h	48%	55%	0
Fri 9p	Cloudy	47°8° (likely 45°7° to 48°9°)	47°8°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	58%	77%	0
Fri 10p	Cloudy	45°7° (likely 44°7° to 47°8°)	45°7°	0%	2 mph3 km/h from NE, gusts 6 mph9 km/h	65%	68%	0
Fri 11p	Partly cloudy	42°6° (likely 42°6° to 45°7°)	42°6°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	79%	28%	0
Sat 12a	Partly cloudy	41°5° (likely 41°5° to 44°7°)	41°5°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	82%	21%	0
Sat 1a	Partly cloudy	40°4° (likely 39°4° to 43°6°)	40°4°	0%	2 mph3 km/h from N, gusts 5 mph9 km/h	82%	17%	0
Sat 2a	Clear	39°4° (likely 38°3° to 42°6°)	39°4°	0%	2 mph3 km/h from N, gusts 6 mph9 km/h	85%	10%	0
Sat 3a	Clear	38°3° (likely 37°3° to 41°5°)	38°3°	0%	2 mph3 km/h from N, gusts 6 mph9 km/h	89%	11%	0
Sat 4a	Partly cloudy	37°3° (likely 36°2° to 40°4°)	37°3°	0%	2 mph3 km/h from N, gusts 6 mph9 km/h	92%	20%	0
Sat 5a	Mostly cloudy	37°3° (likely 35°2° to 40°4°)	34°1°	0%	3 mph5 km/h from N, gusts 6 mph9 km/h	92%	38%	0
Sat 6a	Cloudy	36°2° (likely 34°1° to 39°4°)	33°1°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	96%	75%	0
Sat 7a	Cloudy	37°3° (likely 34°1° to 39°4°)	37°3°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	92%	78%	0
Sat 8a	Cloudy	37°3° (likely 34°1° to 40°4°)	34°1°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	92%	77%	0
Sat 9a	Cloudy	45°7° (likely 41°5° to 45°7°)	45°7°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	73%	80%	1
Sat 10a	Cloudy	51°11° (likely 49°9° to 51°11°)	51°11°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	61%	80%	2
Sat 11a	Partly sunny	57°14° (likely 52°11° to 57°14°)	57°14°	0%	2 mph3 km/h from N, gusts 3 mph6 km/h	49%	71%	3
Sat 12p	Cloudy	60°16° (likely 55°13° to 60°16°)	60°16°	0%	2 mph3 km/h from N, gusts 3 mph6 km/h	42%	66%	3
Sat 1p	Partly sunny	62°17° (likely 57°14° to 62°17°)	62°17°	0%	2 mph3 km/h from NW, gusts 3 mph4 km/h	38%	65%	4
Sat 2p	Partly sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	2 mph3 km/h from NW, gusts 3 mph4 km/h	35%	58%	4
Sat 3p	Mostly sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	33%	51%	3
Sat 4p	Mostly sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	2 mph3 km/h from W, gusts 4 mph7 km/h	33%	19%	2
Sat 5p	Sunny	64°18° (likely 59°15° to 64°18°)	64°18°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	33%	4%	1
Sat 6p	Clear	59°15° (likely 54°12° to 59°15°)	59°15°	0%	2 mph3 km/h from SW, gusts 6 mph10 km/h	42%	2%	0
Sat 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	2 mph3 km/h from SW, gusts 7 mph11 km/h	55%	1%	0
Sat 8p	Clear	51°11° (likely 47°8° to 51°11°)	51°11°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	63%	1%	0
Sat 9p	Clear	49°9° (likely 46°8° to 49°9°)	49°9°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	68%	1%	0
Sat 10p	Clear	46°8° (likely 44°7° to 48°9°)	46°8°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	76%	0%	0
Sat 11p	Clear	44°7° (likely 43°6° to 47°8°)	44°7°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	82%	0%	0
Sun 12a	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	89%	0%	0
Sun 1a	Clear	40°4° (likely 40°4° to 44°7°)	40°4°	0%	2 mph3 km/h from NW, gusts 5 mph7 km/h	92%	0%	0
Sun 2a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	96%	0%	0
Sun 3a	Clear	38°3° (likely 38°3° to 42°6°)	38°3°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	96%	0%	0
Sun 4a	Clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	100%	0%	0
Sun 5a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	100%	0%	0
Sun 6a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	2 mph3 km/h from NW, gusts 4 mph7 km/h	100%	0%	0
Sun 7a	Sunny	35°2° (likely 35°2° to 40°4°)	35°2°	0%	2 mph3 km/h from NW, gusts 5 mph9 km/h	100%	0%	0
Sun 8a	Sunny	36°2° (likely 36°2° to 40°4°)	36°2°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	100%	0%	0
Sun 9a	Sunny	45°7° (likely 40°4° to 45°7°)	45°7°	0%	2 mph3 km/h from NW, gusts 5 mph9 km/h	82%	0%	1
Sun 10a	Sunny	53°12° (likely 50°10° to 53°12°)	53°12°	0%	2 mph3 km/h from NW, gusts 7 mph12 km/h	64%	0%	2
Sun 11a	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	2 mph3 km/h from NW, gusts 7 mph11 km/h	51%	0%	3
Sun 12p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	41%	0%	4
Sun 1p	Sunny	65°18° (likely 61°16° to 65°18°)	65°18°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	37%	0%	4
Sun 2p	Sunny	67°19° (likely 63°17° to 67°19°)	67°19°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	32%	0%	4
Sun 3p	Sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	31%	0%	3
Sun 4p	Sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	2 mph3 km/h from SW, gusts 6 mph10 km/h	32%	0%	2

Days ahead

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

Today, Oct 23. Cloudy. High 62°17°, low 36°2°. Typical 63°17° / 46°8°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny. High near 62, with temperatures falling to around 60 in the afternoon. Northeast wind around 3 mph.
Tonight: Areas of frost after midnight. Partly cloudy, with a low around 36. Northeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–62°17°
Low, likely
36°2°–45°7°
Typical high / low
63°17° / 46°8°
Wind
11 mph18 km/h, gusts 25 mph41 km/h
UV peak
4
Tomorrow, Oct 24. Cloudy. High 64°18°, low 35°2°. Typical 63°17° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 64. Northwest wind around 3 mph.
Night: Areas of frost after midnight. Mostly clear, with a low around 35. West wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–64°18°
Low, likely
34°1°–39°4°
Typical high / low
63°17° / 46°8°
Wind
6 mph9 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 68°20°, low 39°4°. Typical 63°17° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°5°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 68. West wind around 2 mph.
Night: Clear. Low around 39, with temperatures rising to around 41 overnight.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–68°20°
Low, likely
35°2°–40°4°
Typical high / low
63°17° / 46°8°
Wind
6 mph10 km/h, gusts 11 mph18 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 69°21°, low 47°8°. Typical 62°17° / 45°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  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: Sunny, with a high near 69.
Night: Mostly clear, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
36°2°–47°8°
Typical high / low
62°17° / 45°7°
Wind
8 mph12 km/h, gusts 21 mph34 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 62°17°, low 41°5°. Typical 62°17° / 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  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 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–63°17°
Low, likely
41°5°–49°9°
Typical high / low
62°17° / 45°7°
Wind
9 mph14 km/h, gusts 22 mph35 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 59°15°, low 45°7°. Typical 62°17° / 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 59.
Night: Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–61°16°
Low, likely
37°3°–45°7°
Typical high / low
62°17° / 45°7°
Wind
7 mph11 km/h, gusts 16 mph25 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 66°19°, low 49°9°. Typical 61°16° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Partly cloudy, with a low around 49.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–68°20°
Low, likely
44°7°–49°9°
Typical high / low
61°16° / 44°7°
Wind
9 mph14 km/h, gusts 31 mph50 km/h
UV peak
4
Friday, Oct 30. Sunny. High 69°21°, low 48°9°. Typical 61°16° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°9°
  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
63°17°–72°22°
Low, likely
46°8°–50°10°
Typical high / low
61°16° / 44°7°
Wind
7 mph11 km/h, gusts 20 mph32 km/h
UV peak
4
Saturday, Oct 31. Partly sunny. High 66°19°, low 46°8°. Typical 60°16° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–69°21°
Low, likely
39°4°–53°12°
Typical high / low
60°16° / 44°7°
Wind
8 mph12 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 63°17°, low 49°9°. Typical 60°16° / 43°6°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 62°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  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
58°14°–68°20°
Low, likely
44°7°–55°13°
Typical high / low
60°16° / 43°6°
Wind
10 mph16 km/h, gusts 25 mph41 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 36°.
Tomorrow
Dry, high 64°, low 35°.
Sunday
Dry, high 68°, low 39°, warming up.
Rest of week
Mostly dry, highs 59–69°.

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

Passaic River at Chatham

1.5 mi

Below flood stage

Level: 3.6 ft
Flow: 63 cfs

Forecast peak 3.6 ft Fri 8 PM

Reading from Fri 4:15 PM · NWS gauge page

Passaic River near Millington

8.9 mi

Below flood stage

Level: 4.8 ft
Flow: 36 cfs

Forecast peak 4.8 ft Fri 8 PM

Reading from Fri 3:30 PM · NWS gauge page

Passaic River at Pine Brook

10 mi

Below flood stage

Level: 13.2 ft
Flow: 362 cfs

Forecast peak 13.1 ft Fri 8 PM

Reading from Fri 3:15 PM · NWS gauge page

Rahway River at Springfield

3.4 mi

Below flood stage

Level: 1.4 ft
Flow: 26 cfs

Reading from Fri 3:30 PM · NWS gauge page

For your home

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

Heating this week

About 59% less heating than a typical week.

This week 32Typical 79

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
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 18 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 28°F).

Open the windows?

Sat, 12:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Newark Liberty International Airport · official normals 1991–2020 · records 1843–2026

Oct 23, 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).

−5°−3°SatOct 17
−7°−4°SunOct 18
−3°−2°MonOct 19
+2°+1°TueOct 20
+1°WedOct 21
+3°+2°ThuOct 22
—FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 48 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 33 min less
Golden hour: 5:27–6:22 PM; Morning 7:00–7:55 AM
Blue hour: 6:22–6:33 PM; Morning 6:49–7:00 AM; first light 6:49 AM

Stars tonight? Fair

Mostly clear 12–5 AM, but the moon is 95% lit and up.

Moon

Waxing gibbous

93% lit · growing

Today: sets 4:20 AM · rises 4:37 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Summit. The highest point on the skyline is about 1,400 ft, 22 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Summit, NJ weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Passaic River at Chatham

Passaic River near Millington

Passaic River at Pine Brook

Rahway River at Springfield

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? Fair

Moon