Frost Advisory
Starts in 7 h 44 min
When
From midnight tonight to 9 AM EDT Sunday.
Where
In Connecticut, Southern Fairfield, Southern Middlesex, Southern New Haven, and Southern New London Counties. In New York, Northeast Suffolk and Southeast Suffolk Counties.
Issued for this forecast zone · National Weather Service Upton NY
What, impacts and precautionsHide details
What
Temperatures in the mid 30s, and locally as low 25 to 30 in parts of the Pine Barrens of Long Island, will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: Southern Fairfield; Southern New Haven; Southern Middlesex; Southern New London; Northeast Suffolk; Southeast Suffolk
See it on weather.gov (opens in a new tab)

Observed 3:50 PM EDT at KGON

Poquonock Bridge, CT weather

Sunny and 59°15°, jacket by 6 PM.

Mostly agree

Now 59°15°

Sunny

Wind: 9 mph15 km/h; From the southwest. Up to 9 mph15 km/h through 4 AM
Dew point: 39°4°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Air quality: 16Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.49 inHg1033 hPa; Falling slowly · −0.04 inHg−1.2 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (61°16° then, 60°16° now)

Good hours for

Below 50°10° tonight after 8 PM
Low 35°2° tonight at 5 AM
Above 50°10° tomorrow by 10 AM
High 62°17° tomorrow at 2 PM

This afternoonNear 59°15° · Partly cloudy
TonightDown to 35°2° by 5 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonNear 59°15° · Clear
Tomorrow nightDown to 38°3° by 4 AM · Clear
Monday morningUp to 55°13° by 11 AM · Clear
Monday afternoonUp to 65°18° 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
Sat 4p	Sunny	59°15° (likely 57°14° to 61°16°)	59°15°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	44%	42%	2
Sat 5p	Mostly sunny	58°14° (likely 56°13° to 58°14°)	58°14°	0%	3 mph5 km/h from W, gusts 9 mph14 km/h	47%	14%	1
Sat 6p	Clear	55°13° (likely 51°11° to 55°13°)	55°13°	0%	2 mph3 km/h from W, gusts 8 mph14 km/h	53%	2%	0
Sat 7p	Clear	50°10° (likely 48°9° to 51°11°)	50°10°	0%	2 mph3 km/h from NW, gusts 9 mph14 km/h	61%	2%	0
Sat 8p	Clear	46°8° (likely 45°7° to 50°10°)	46°8°	0%	1 mph2 km/h from NW, gusts 9 mph14 km/h	71%	0%	0
Sat 9p	Clear	44°7° (likely 43°6° to 49°9°)	44°7°	0%	0 mph0 km/h, gusts 9 mph14 km/h	73%	0%	0
Sat 10p	Clear	42°6° (likely 41°5° to 48°9°)	42°6°	0%	0 mph0 km/h, gusts 8 mph14 km/h	76%	3%	0
Sat 11p	Clear	40°4° (likely 40°4° to 47°8°)	40°4°	0%	0 mph0 km/h, gusts 7 mph12 km/h	82%	0%	0
Sun 12a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	82%	0%	0
Sun 1a	Clear	38°3° (likely 38°3° to 44°7°)	38°3°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	85%	0%	0
Sun 2a	Clear	37°3° (likely 37°3° to 43°6°)	37°3°	0%	1 mph2 km/h from N, gusts 7 mph11 km/h	85%	0%	0
Sun 3a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	1 mph2 km/h from N, gusts 8 mph12 km/h	89%	0%	0
Sun 4a	Clear	36°2° (likely 35°2° to 42°6°)	36°2°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	85%	0%	0
Sun 5a	Clear	35°2° (likely 35°2° to 41°5°)	35°2°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	89%	0%	0
Sun 6a	Clear	35°2° (likely 34°1° to 41°5°)	35°2°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	89%	0%	0
Sun 7a	Sunny	35°2° (likely 33°1° to 40°4°)	35°2°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	89%	0%	0
Sun 8a	Sunny	37°3° (likely 34°1° to 41°5°)	37°3°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	85%	0%	0
Sun 9a	Sunny	43°6° (likely 41°5° to 46°8°)	43°6°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	70%	0%	1
Sun 10a	Sunny	50°10° (likely 50°10° to 54°12°)	50°10°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	56%	0%	2
Sun 11a	Sunny	56°13° (likely 54°12° to 58°14°)	56°13°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	49%	0%	3
Sun 12p	Sunny	59°15° (likely 58°14° to 62°17°)	59°15°	0%	2 mph3 km/h from NW, gusts 5 mph9 km/h	45%	0%	4
Sun 1p	Sunny	61°16° (likely 59°15° to 64°18°)	61°16°	0%	3 mph5 km/h from W, gusts 6 mph10 km/h	46%	0%	4
Sun 2p	Sunny	62°17° (likely 59°15° to 64°18°)	62°17°	0%	5 mph8 km/h from SW, gusts 8 mph12 km/h	46%	0%	4
Sun 3p	Sunny	62°17° (likely 59°15° to 64°18°)	62°17°	0%	5 mph8 km/h from SW, gusts 8 mph13 km/h	48%	0%	3
Sun 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from SW, gusts 10 mph16 km/h	50%	0%	2
Sun 5p	Sunny	59°15° (likely 57°14° to 59°15°)	59°15°	0%	3 mph5 km/h from SW, gusts 10 mph16 km/h	53%	0%	1
Sun 6p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	3 mph5 km/h from SW, gusts 8 mph12 km/h	64%	0%	0
Sun 7p	Clear	51°11° (likely 49°9° to 53°12°)	51°11°	0%	2 mph3 km/h from SW, gusts 8 mph12 km/h	74%	1%	0
Sun 8p	Clear	47°8° (likely 47°8° to 53°12°)	47°8°	0%	2 mph3 km/h from SW, gusts 8 mph13 km/h	89%	1%	0
Sun 9p	Clear	46°8° (likely 46°8° to 52°11°)	46°8°	0%	2 mph3 km/h from SW, gusts 8 mph13 km/h	93%	1%	0
Sun 10p	Clear	45°7° (likely 45°7° to 52°11°)	45°7°	0%	2 mph3 km/h from SW, gusts 9 mph15 km/h	96%	0%	0
Sun 11p	Clear	43°6° (likely 43°6° to 52°11°)	43°6°	0%	2 mph3 km/h from SW, gusts 9 mph15 km/h	100%	0%	0
Mon 12a	Clear	43°6° (likely 43°6° to 51°11°)	43°6°	0%	2 mph3 km/h from W, gusts 10 mph15 km/h	100%	0%	0
Mon 1a	Clear	42°6° (likely 42°6° to 50°10°)	42°6°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	96%	0%	0
Mon 2a	Clear	40°4° (likely 40°4° to 49°9°)	40°4°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	100%	0%	0
Mon 3a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	2 mph3 km/h from W, gusts 13 mph20 km/h	100%	0%	0
Mon 4a	Clear	38°3° (likely 38°3° to 44°7°)	36°2°	0%	3 mph5 km/h from W, gusts 13 mph22 km/h	100%	0%	0
Mon 5a	Clear	38°3° (likely 38°3° to 43°6°)	36°2°	0%	3 mph5 km/h from W, gusts 11 mph18 km/h	100%	1%	0
Mon 6a	Clear	36°2° (likely 36°2° to 43°6°)	33°1°	0%	3 mph5 km/h from W, gusts 12 mph19 km/h	100%	2%	0
Mon 7a	Sunny	37°3° (likely 37°3° to 42°6°)	34°1°	0%	3 mph5 km/h from W, gusts 11 mph17 km/h	100%	2%	0
Mon 8a	Sunny	39°4° (likely 39°4° to 44°7°)	37°3°	0%	3 mph5 km/h from W, gusts 10 mph15 km/h	100%	16%	0
Mon 9a	Sunny	45°7° (likely 45°7° to 50°10°)	44°7°	0%	3 mph5 km/h from W, gusts 9 mph15 km/h	82%	15%	1
Mon 10a	Sunny	50°10° (likely 50°10° to 55°13°)	48°9°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	74%	8%	2
Mon 11a	Sunny	55°13° (likely 55°13° to 60°16°)	55°13°	0%	6 mph10 km/h from W, gusts 11 mph17 km/h	69%	10%	3
Mon 12p	Sunny	59°15° (likely 59°15° to 63°17°)	59°15°	0%	7 mph11 km/h from W, gusts 13 mph21 km/h	62%	3%	4
Mon 1p	Sunny	62°17° (likely 62°17° to 65°18°)	62°17°	0%	8 mph13 km/h from W, gusts 13 mph21 km/h	60%	5%	4
Mon 2p	Mostly sunny	64°18° (likely 64°18° to 66°19°)	64°18°	0%	9 mph14 km/h from W, gusts 14 mph22 km/h	58%	14%	4
Mon 3p	Sunny	65°18° (likely 63°17° to 67°19°)	65°18°	0%	9 mph14 km/h from W, gusts 13 mph21 km/h	58%	3%	3

Days ahead

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

Today, Oct 24. Mostly sunny. High 60°16°, low 34°1°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Mostly sunny, 59°15°
  Dry
2. Evening
  6 PM–midnight
  Clear, 46°8°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Today: Sunny. High near 60, with temperatures falling to around 58 in the afternoon. West wind around 3 mph.
Tonight: Areas of frost after 1am. Mostly clear, with a low around 34. Northwest wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–61°16°
Low, likely
31°−1°–36°2°
Typical high / low
61°16° / 41°5°
Wind
7 mph12 km/h, gusts 13 mph21 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 62°17°, low 36°2°. Typical 61°16° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny. High near 62, with temperatures falling to around 59 in the afternoon. Northwest wind 1 to 5 mph.
Night: Patchy frost after 4am. Mostly clear. Low around 36, with temperatures rising to around 38 overnight. West wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–64°18°
Low, likely
33°1°–40°4°
Typical high / low
61°16° / 40°4°
Wind
9 mph14 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 66°19°, low 45°7°. Typical 60°16° / 40°4°. Dry. Mostly 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, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Official NWS forecast
Day: Patchy frost before 8am. Sunny. High near 66, with temperatures falling to around 64 in the afternoon. West wind 3 to 9 mph.
Night: Clear. Low around 45, with temperatures rising to around 47 overnight.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–66°19°
Low, likely
39°4°–46°8°
Typical high / low
60°16° / 40°4°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
UV peak
4
Tuesday, Oct 27. Sunny. High 58°14°, low 34°1°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 58.
Night: Clear, with a low around 34.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–58°14°
Low, likely
34°1°–47°8°
Typical high / low
60°16° / 40°4°
Wind
13 mph20 km/h, gusts 25 mph40 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 57°14°, low 41°5°. Typical 60°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 57.
Night: Partly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
52°11°–57°14°
Low, likely
30°−1°–41°5°
Typical high / low
60°16° / 39°4°
Wind
11 mph17 km/h, gusts 17 mph27 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 63°17°, low 50°10°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 47°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 63.
Night: Mostly clear, with a low around 50.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–63°17°
Low, likely
42°6°–51°11°
Typical high / low
59°15° / 39°4°
Wind
13 mph20 km/h, gusts 32 mph52 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 68°20°, low 47°8°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68.
Night: Mostly clear, with a low around 47.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–70°21°
Low, likely
47°8°–54°12°
Typical high / low
59°15° / 39°4°
Wind
11 mph18 km/h, gusts 20 mph32 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 62°17°, low 48°9°. Typical 58°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°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°–67°19°
Low, likely
44°7°–53°12°
Typical high / low
58°14° / 38°3°
Wind
13 mph21 km/h, gusts 26 mph42 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 63°17°, low 51°11°. Typical 58°14° / 38°3°. Rain, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  30% chance
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  40% chance · 0.04 in1 mm
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°–68°20°
Low, likely
48°9°–55°13°
Typical high / low
58°14° / 38°3°
Wind
11 mph18 km/h, gusts 22 mph36 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 63°17°, low 58°14°. Typical 58°14° / 38°3°. Rain 0.32 in8.1 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 60°15°
  40% chance · 0.07 in1.9 mm
2. Afternoon
  noon–6 PM
  Showers, 63°17°
  30% chance · 0.14 in3.5 mm
3. Evening
  6 PM–midnight
  Showers, 62°17°
  20% chance · 0.11 in2.7 mm
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
61°16°–68°20°
Low, likely
55°13°–63°17°
Typical high / low
58°14° / 38°3°
Wind
19 mph31 km/h, gusts 29 mph47 km/h

10 days15 days30 days

The outlook

Today
Dry, high 60°, low 34°.
Tomorrow
Dry, high 62°, low 36°.
Monday
Dry, high 66°, low 45°, warming up.
Rest of week
Mostly dry, highs 57–68°.

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

Long Island Sound near New London Harbor (IN MLLW)

4.6 mi

Below flood stage

Level: 1.0 ft

Forecast peak 4.3 ft Tue 10 AM

Reading from Sat 3 PM · NWS gauge page

Atlantic Coast at Watch Hill Cove (IN MLLW)

8.2 mi

Below flood stage

Level: 0.8 ft

Forecast peak 3.3 ft Sun 9 AM

Reading from Sat 3 PM · NWS gauge page

Pawcatuck at Westerly

9.9 mi

Below flood stage

Level: 4.3 ft
Flow: 413 cfs

Forecast peak 4.3 ft Sat 8 PM

Reading from Sat 2 PM · NWS gauge page

Yantic River at Yantic

16 mi

Below flood stage

Level: 2.0 ft
Flow: 88 cfs

Forecast peak 2.0 ft Sat 8 PM

Reading from Sat 2:45 PM · NWS gauge page

For your home

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

Heating this week

About 67% less heating than a typical week.

This week 35Typical 106

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 28
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 39°F).

Open the windows?

Sun, 1:00 PM–4:00 PM

Good stretch to open the windows.

Is this typical?

NORWICH PUBLIC UTILITY PLANT · official normals 1991–2020 · records 1956–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 4°2° colder than normal (daily mean temperature).

−12°−7°SunOct 18
−7°−4°MonOct 19
−2°−1°TueOct 20
+2°+1°WedOct 21
—ThuOct 22
+4°+2°FriOct 23
−5°−3°SatOct 24

Poquonock Bridge 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 32 min less
Golden hour: 5:15–6:11 PM; Morning 6:52–7:48 AM
Blue hour: 6:11–6:21 PM; Morning 6:41–6:52 AM; first light 6:41 AM

Stars tonight? Fair

Clear 6:21 PM–6:43 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:20 AM · rises 4:50 PM
Full moon: Oct 26
New moon: Nov 9

Looking southeast from Poquonock Bridge. Open water to the horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Frost Advisory

Poquonock Bridge, CT weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Long Island Sound near New London Harbor (IN MLLW)

Atlantic Coast at Watch Hill Cove (IN MLLW)

Pawcatuck at Westerly

Yantic River at Yantic

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