Observed 9:55 AM EDT at KGTB

Calcium, NY weather

Sunny and 43°6°.

Forecasts agree

Now 43°6°

Sunny

Wind: 3 mph5 km/h; From the southeast. Up to 6 mph10 km/h through 11 PM
Dew point: 30°−1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

3°1° warmer than this time yesterday (41°5° then, 43°6° now)

Good hours for

Below 50°10° tonight after 8 PM
Above 50°10° tomorrow by 10 AM
Fog tomorrow night 3–4 AM
Fog Monday 7–8 AM
Fog Monday 9–10 AM

This afternoonUp to 58°14° by 3 PM · Clear
TonightDown to 38°3° by midnight · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonNear 58°14° · Partly cloudy
Tomorrow nightDown to 47°8° by 4 AM · Mostly cloudy
Monday morningUp to 53°12° by 10 AM · rain chance 20% · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 11a	Sunny	48°9° (likely 46°8° to 51°11°)	47°8°	0%	3 mph5 km/h from S, gusts 4 mph7 km/h	50%	1%	2
Sat 12p	Sunny	52°11° (likely 49°9° to 54°12°)	52°11°	0%	3 mph5 km/h from W, gusts 5 mph8 km/h	44%	1%	2
Sat 1p	Sunny	55°13° (likely 52°11° to 56°13°)	55°13°	0%	5 mph8 km/h from W, gusts 6 mph9 km/h	41%	1%	2
Sat 2p	Sunny	57°14° (likely 55°13° to 57°14°)	57°14°	0%	6 mph10 km/h from W, gusts 6 mph10 km/h	40%	1%	2
Sat 3p	Sunny	58°14° (likely 56°13° to 58°14°)	58°14°	0%	5 mph8 km/h from W, gusts 6 mph10 km/h	40%	0%	2
Sat 4p	Sunny	58°14° (likely 55°13° to 58°14°)	58°14°	0%	3 mph5 km/h from W, gusts 6 mph10 km/h	41%	0%	1
Sat 5p	Sunny	57°14° (likely 53°12° to 57°14°)	57°14°	0%	3 mph5 km/h from NW, gusts 5 mph8 km/h	43%	0%	0
Sat 6p	Clear	54°12° (likely 47°8° to 54°12°)	54°12°	0%	2 mph3 km/h from N, gusts 4 mph6 km/h	47%	0%	0
Sat 7p	Clear	50°10° (likely 44°7° to 50°10°)	50°10°	0%	3 mph5 km/h from NE, gusts 3 mph5 km/h	54%	0%	0
Sat 8p	Clear	47°8° (likely 42°6° to 47°8°)	46°8°	0%	3 mph5 km/h from SE, gusts 4 mph6 km/h	59%	0%	0
Sat 9p	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	79%	0%	0
Sat 10p	Clear	39°4° (likely 38°3° to 43°6°)	39°4°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	81%	0%	0
Sat 11p	Clear	39°4° (likely 36°2° to 42°6°)	39°4°	0%	2 mph3 km/h from SE, gusts 8 mph12 km/h	81%	8%	0
Sun 12a	Clear	38°3° (likely 35°2° to 43°6°)	36°2°	0%	3 mph5 km/h from SE, gusts 9 mph14 km/h	78%	7%	0
Sun 1a	Clear	38°3° (likely 35°2° to 43°6°)	36°2°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	77%	0%	0
Sun 2a	Clear	38°3° (likely 35°2° to 42°6°)	36°2°	0%	3 mph5 km/h from S, gusts 8 mph13 km/h	76%	0%	0
Sun 3a	Clear	39°4° (likely 35°2° to 43°6°)	36°2°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	73%	0%	0
Sun 4a	Clear	38°3° (likely 36°2° to 43°6°)	36°2°	0%	3 mph5 km/h from S, gusts 8 mph13 km/h	74%	0%	0
Sun 5a	Clear	38°3° (likely 37°3° to 43°6°)	35°2°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	74%	0%	0
Sun 6a	Clear	37°3° (likely 36°2° to 42°6°)	34°1°	0%	5 mph8 km/h from S, gusts 6 mph9 km/h	74%	0%	0
Sun 7a	Clear	36°2° (likely 36°2° to 42°6°)	33°1°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	77%	0%	0
Sun 8a	Sunny	38°3° (likely 37°3° to 42°6°)	34°1°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	75%	0%	0
Sun 9a	Sunny	44°7° (likely 40°4° to 47°8°)	40°4°	0%	6 mph10 km/h from S, gusts 6 mph10 km/h	72%	0%	1
Sun 10a	Sunny	51°11° (likely 50°10° to 54°12°)	51°11°	0%	6 mph10 km/h from S, gusts 13 mph22 km/h	60%	0%	1
Sun 11a	Sunny	56°13° (likely 55°13° to 58°14°)	56°13°	0%	7 mph11 km/h from SW, gusts 16 mph26 km/h	51%	0%	2
Sun 12p	Sunny	58°14° (likely 58°14° to 59°15°)	58°14°	0%	8 mph13 km/h from SW, gusts 16 mph26 km/h	48%	0%	3
Sun 1p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	8 mph13 km/h from SW, gusts 16 mph27 km/h	44%	19%	4
Sun 2p	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	8 mph13 km/h from SW, gusts 16 mph26 km/h	43%	34%	3
Sun 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	8 mph13 km/h from SW, gusts 17 mph27 km/h	44%	30%	3
Sun 4p	Sunny	60°16° (likely 58°14° to 61°16°)	60°16°	0%	7 mph11 km/h from SW, gusts 16 mph26 km/h	46%	40%	2
Sun 5p	Sunny	58°14° (likely 55°13° to 59°15°)	58°14°	0%	7 mph11 km/h from SW, gusts 13 mph21 km/h	51%	42%	1
Sun 6p	Mostly clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	6 mph10 km/h from S, gusts 9 mph14 km/h	60%	65%	0
Sun 7p	Cloudy	50°10° (likely 47°8° to 50°10°)	47°8°	0%	6 mph10 km/h from S, gusts 6 mph10 km/h	67%	74%	0
Sun 8p	Cloudy	48°9° (likely 45°7° to 49°9°)	46°8°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	70%	79%	0
Sun 9p	Partly cloudy	48°9° (likely 45°7° to 48°9°)	46°8°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	68%	69%	0
Sun 10p	Cloudy	48°9° (likely 45°7° to 48°9°)	46°8°	0%	5 mph8 km/h from S, gusts 6 mph9 km/h	67%	81%	0
Sun 11p	Cloudy	48°9° (likely 47°8° to 48°9°)	45°7°	0%	6 mph10 km/h from S, gusts 10 mph17 km/h	66%	81%	0
Mon 12a	Cloudy	48°9° (likely 47°8° to 49°9°)	46°8°	0%	6 mph10 km/h from S, gusts 11 mph18 km/h	65%	86%	0
Mon 1a	Cloudy	48°9° (likely 48°9° to 51°11°)	46°8°	0%	6 mph10 km/h from S, gusts 13 mph20 km/h	65%	81%	0
Mon 2a	Cloudy	48°9° (likely 48°9° to 51°11°)	46°8°	0%	6 mph10 km/h from S, gusts 14 mph22 km/h	67%	87%	0
Mon 3a	Fog	48°9° (likely 48°9° to 51°11°)	45°7°	0%	6 mph10 km/h from S, gusts 15 mph23 km/h	70%	48%	0
Mon 4a	Cloudy	47°8° (likely 47°8° to 51°11°)	44°7°	0%	7 mph11 km/h from S, gusts 14 mph23 km/h	74%	81%	0
Mon 5a	Partly cloudy	47°8° (likely 47°8° to 51°11°)	44°7°	0%	7 mph11 km/h from S, gusts 15 mph24 km/h	78%	65%	0
Mon 6a	Cloudy	46°8° (likely 46°8° to 50°10°)	43°6°	0%	7 mph11 km/h from S, gusts 15 mph24 km/h	83%	65%	0
Mon 7a	Fog	46°8° (likely 46°8° to 50°10°)	42°6°	0%	8 mph13 km/h from SW, gusts 16 mph25 km/h	87%	54%	0
Mon 8a	Cloudy	47°8° (likely 47°8° to 51°11°)	43°6°	20%	8 mph13 km/h from SW, gusts 16 mph25 km/h	89%	70%	0
Mon 9a	Fog	50°10° (likely 50°10° to 52°11°)	47°8°	20%	8 mph13 km/h from SW, gusts 18 mph29 km/h	88%	64%	1
Mon 10a	Showers	53°12° (likely 52°11° to 56°13°)	53°12°	20%	8 mph13 km/h from SW, gusts 18 mph29 km/h	86%	60%	1

Days ahead

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

Today, Oct 24. Sunny. High 58°14°, low 36°2°. Typical 55°13° / 37°3°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
2. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 58. West wind around 6 mph.
Tonight: Patchy fog after 11pm. Clear, with a low around 36. Southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
56°13°–58°14°
Low, likely
27°−3°–36°2°
Typical high / low
55°13° / 37°3°
Wind
6 mph10 km/h, gusts 11 mph18 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 62°17°, low 45°7°. Typical 55°13° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 47°8°
  Dry
Official NWS forecast
Day: Patchy fog before 10am. Sunny, with a high near 62. Southwest wind 5 to 8 mph.
Night: Patchy fog after 11pm. Partly cloudy, with a low around 45. South wind around 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
35°2°–45°7°
Typical high / low
55°13° / 36°2°
Wind
11 mph18 km/h, gusts 20 mph32 km/h
UV peak
4
Monday, Oct 26. Fog. High 58°14°, low 29°−2°. Typical 54°12° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 47°8°
  20% chance
2. Afternoon
  noon–6 PM
  Drizzle, 56°13°
  40% chance · 0.05 in1.2 mm
3. Evening
  6 PM–midnight
  Cloudy, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 8am, then patchy fog and a slight chance of rain showers between 8am and 2pm. Partly sunny, with a high near 58. West wind around 8 mph. Chance of precipitation is 20%.
Night: Patchy fog after 11pm. Partly cloudy, with a low around 29. North wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–58°14°
Low, likely
29°−2°–44°7°
Typical high / low
54°12° / 36°2°
Wind
12 mph19 km/h, gusts 24 mph38 km/h
UV peak
3
Tuesday, Oct 27. Fog. High 46°8°, low 26°−3°. Typical 54°12° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 45°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 34°1°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 30°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 10am. Sunny, with a high near 46. North wind around 7 mph.
Night: Mostly clear, with a low around 26. Northeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
44°7°–46°8°
Low, likely
26°−3°–32°0°
Typical high / low
54°12° / 36°2°
Wind
9 mph15 km/h, gusts 21 mph34 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 54°12°, low 40°4°. Typical 54°12° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 54.
Night: Partly cloudy, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–58°14°
Low, likely
28°−2°–40°4°
Typical high / low
54°12° / 36°2°
Wind
11 mph17 km/h, gusts 26 mph41 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 62°17°, low 46°8°. Typical 53°12° / 35°2°. Dry. Forecasts agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 2pm. Mostly sunny, with a high near 62.
Night: A slight chance of rain showers before 2am. Partly cloudy, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 62°17°).
High, likely
62°17°–65°18°
Low, likely
46°8°–50°10°
Typical high / low
53°12° / 35°2°
Wind
14 mph22 km/h, gusts 37 mph60 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 58°14°, low 39°4°. Typical 53°12° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 58.
Night: Partly cloudy, with a low around 39.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–62°17°
Low, likely
39°4°–52°11°
Typical high / low
53°12° / 35°2°
Wind
14 mph23 km/h, gusts 29 mph47 km/h
UV peak
1
Saturday, Oct 31. Cloudy. High 62°17°, low 45°7°. Typical 53°12° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 49°9°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
52°11°–67°19°
Low, likely
31°−1°–53°12°
Typical high / low
53°12° / 35°2°
Wind
9 mph14 km/h, gusts 21 mph34 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 65°18°, low 50°10°. Typical 52°11° / 34°1°. Rain 0.04 in1 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 51°10°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  40% chance
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  50% chance
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  50% chance · 0.02 in0.5 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
58°14°–70°21°
Low, likely
37°3°–55°13°
Typical high / low
52°11° / 34°1°
Wind
12 mph19 km/h, gusts 30 mph48 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 58°14°, low 49°9°. Typical 52°11° / 34°1°. Rain 0.23 in5.8 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  50% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  50% chance · 0.03 in0.7 mm
3. Evening
  6 PM–midnight
  Cloudy, 51°10°
  40% 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
54°12°–62°17°
Low, likely
44°7°–54°12°
Typical high / low
52°11° / 34°1°
Wind
14 mph22 km/h, gusts 31 mph50 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 58°, low 36°.
Tomorrow
Dry, high 62°, low 45°, warming up.
Monday
Dry, high 58°, low 29°, cooling off.
Rest of week
Mostly dry, highs 46–65°.

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

Black River at Watertown

5.3 mi

Below flood stage

Level: 3.5 ft
Flow: 2,050 cfs

Forecast peak 3.3 ft Sat 2 PM

Reading from Sat 9:30 AM · NWS gauge page

Lake America at Sackets Harbor

16 mi

Level: 245 ft

Reading from Sat 10:24 AM · NWS gauge page

Sandy Creek near Adams

19 mi

Below flood stage

Level: 1.9 ft
Flow: 114 cfs

Reading from Sat 10 AM · NWS gauge page

St. Lawrence River at Alexandria Bay (NOS)

20 mi

Level: 1.7 ft

Reading from Sat 10:30 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 32Typical 141

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 19
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 2 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°F).

Open the windows?

Sun, 1:00 PM–4:00 PM

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

Is this typical?

Watertown International Airport · official normals 1991–2020 · records 1949–2026

Oct 24, today vs a typical year

Today’s expected high is 3°2° warmer than typical.

Last 7 days vs normal

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

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

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

Sun & moon

Sun

Daylight: 10 h 35 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 42 min less
Golden hour: 5:24–6:23 PM; Morning 7:11–8:09 AM
Blue hour: 6:23–6:34 PM; Morning 7:00–7:11 AM; first light 7:00 AM

Stars tonight? Fair

Clear 6:34 PM–7:01 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:38 AM · rises 5:02 PM
Full moon: Oct 26
New moon: Nov 9

Looking southeast from Calcium. The highest point on the skyline is about 3,200 ft, 50 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.