Observed 4:56 PM CDT at K8D3

Grenville, SD weather

Overcast and 52°11°.

Forecasts agree

Now 52°11°

Cloudy

Wind: 11 mph18 km/h; From the northwest. 58–11 mph18 km/h through 5 AM
Dew point: 31°−1°; Dry, static shocks likely
UV tomorrow: 3Moderate; Moderate 1–2 PM · peak 3
Pressure: 30.3 inHg1026 hPa; Rising slowly · +0.04 inHg+1.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

17°9° cooler than this time yesterday (69°21° then, 52°11° now)

Good hours for

Dry until tomorrow 1 PM
Low 38°3° tonight at 5 AM
Rain tomorrow from 1 PM (90%, 3.8 in96 mm)
Gusts to 30 mph48 km/h Monday from 2 PM

TonightDown to 38°3° by 5 AM · Partly cloudy
Tomorrow morningUp to 46°8° by 11 AM · Mostly cloudy
Tomorrow afternoonNear 46°8° · Rain 1–6 PM (50%)
Tomorrow nightDown to 38°3° by 5 AM · Rain all night (80%)
Monday morningNear 38°3° · Rain all morning (80%)
Monday afternoonNear 37°3° · Rain all afternoon (90%) · gusts to 30 mph48 km/h

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5p	Cloudy	49°9° (likely 49°9° to 51°11°)	45°7°	0%	9 mph14 km/h from NNW, gusts 15 mph24 km/h	56%	81%	0
Sat 6p	Cloudy	48°9° (likely 47°8° to 49°9°)	45°7°	0%	6 mph10 km/h from NNW, gusts 12 mph20 km/h	58%	81%	0
Sat 7p	Cloudy	47°8° (likely 44°7° to 48°9°)	45°7°	0%	5 mph8 km/h from NNW, gusts 10 mph16 km/h	60%	84%	0
Sat 8p	Cloudy	45°7° (likely 42°6° to 46°8°)	43°6°	5%	5 mph8 km/h from NNW, gusts 9 mph14 km/h	60%	83%	0
Sat 9p	Cloudy	44°7° (likely 41°5° to 46°8°)	42°6°	0%	5 mph8 km/h from NNW, gusts 9 mph15 km/h	57%	81%	0
Sat 10p	Cloudy	44°7° (likely 39°4° to 45°7°)	41°5°	0%	5 mph8 km/h from N, gusts 9 mph15 km/h	53%	81%	0
Sat 11p	Cloudy	43°6° (likely 39°4° to 44°7°)	40°4°	0%	5 mph8 km/h from N, gusts 8 mph12 km/h	53%	61%	0
Sun 12a	Cloudy	42°6° (likely 38°3° to 43°6°)	39°4°	0%	5 mph8 km/h from N, gusts 6 mph10 km/h	55%	81%	0
Sun 1a	Clear	41°5° (likely 37°3° to 43°6°)	38°3°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	55%	40%	0
Sun 2a	Partly cloudy	40°4° (likely 36°2° to 42°6°)	37°3°	0%	5 mph8 km/h from N, gusts 7 mph11 km/h	57%	33%	0
Sun 3a	Clear	40°4° (likely 36°2° to 41°5°)	37°3°	0%	5 mph8 km/h from NNE, gusts 7 mph11 km/h	55%	24%	0
Sun 4a	Clear	39°4° (likely 35°2° to 40°4°)	36°2°	0%	5 mph8 km/h from NNE, gusts 6 mph9 km/h	57%	21%	0
Sun 5a	Clear	38°3° (likely 34°1° to 40°4°)	34°1°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	59%	25%	0
Sun 6a	Cloudy	38°3° (likely 34°1° to 40°4°)	34°1°	0%	6 mph10 km/h from NE, gusts 9 mph14 km/h	57%	74%	0
Sun 7a	Cloudy	38°3° (likely 34°1° to 41°5°)	34°1°	0%	6 mph10 km/h from NE, gusts 11 mph17 km/h	57%	83%	0
Sun 8a	Cloudy	38°3° (likely 33°1° to 41°5°)	34°1°	0%	5 mph8 km/h from NE, gusts 11 mph17 km/h	57%	85%	0
Sun 9a	Cloudy	39°4° (likely 35°2° to 43°6°)	35°2°	5%	6 mph10 km/h from ENE, gusts 10 mph16 km/h	57%	86%	0
Sun 10a	Cloudy	43°6° (likely 41°5° to 44°7°)	39°4°	5%	6 mph10 km/h from ENE, gusts 11 mph18 km/h	49%	87%	1
Sun 11a	Cloudy	46°8° (likely 44°7° to 46°8°)	42°6°	10%	7 mph11 km/h from ENE, gusts 14 mph23 km/h	43%	94%	2
Sun 12p	Cloudy	46°8° (likely 45°7° to 47°8°)	42°6°	10%	7 mph11 km/h from ENE, gusts 13 mph21 km/h	43%	99%	2
Sun 1p	Cloudy	47°8° (likely 44°7° to 48°9°)	44°7°	20%, 0.05 in1.3 mm	7 mph11 km/h from ENE, gusts 12 mph19 km/h	42%	100%	3
Sun 2p	Rain	47°8° (likely 43°6° to 49°9°)	44°7°	30%, 0.05 in1.3 mm	7 mph11 km/h from ENE, gusts 10 mph16 km/h	42%	100%	2
Sun 3p	Cloudy	47°8° (likely 42°6° to 49°9°)	44°7°	50%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 13 mph20 km/h	44%	100%	2
Sun 4p	Drizzle	46°8° (likely 42°6° to 49°9°)	42°6°	40%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 13 mph20 km/h	45%	100%	1
Sun 5p	Cloudy	45°7° (likely 41°5° to 47°8°)	41°5°	50%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 13 mph21 km/h	49%	100%	1
Sun 6p	Drizzle	44°7° (likely 40°4° to 46°8°)	40°4°	50%, 0.05 in1.3 mm	7 mph11 km/h from ENE, gusts 11 mph18 km/h	55%	100%	0
Sun 7p	Drizzle	43°6° (likely 40°4° to 45°7°)	39°4°	60%, 0.04 in1 mm	7 mph11 km/h from ENE, gusts 15 mph24 km/h	62%	100%	0
Sun 8p	Rain	42°6° (likely 39°4° to 44°7°)	38°3°	60%, 0.04 in1 mm	7 mph11 km/h from NE, gusts 14 mph23 km/h	62%	100%	0
Sun 9p	Rain	41°5° (likely 38°3° to 43°6°)	36°2°	80%, 0.04 in1 mm	8 mph13 km/h from NE, gusts 16 mph25 km/h	67%	100%	0
Sun 10p	Drizzle	40°4° (likely 38°3° to 43°6°)	35°2°	70%, 0.04 in1 mm	8 mph13 km/h from NE, gusts 15 mph24 km/h	73%	100%	0
Sun 11p	Rain	41°5° (likely 38°3° to 43°6°)	35°2°	50%, 0.04 in1 mm	9 mph14 km/h from ENE, gusts 15 mph24 km/h	70%	100%	0
Mon 12a	Rain	40°4° (likely 37°3° to 43°6°)	34°1°	20%, 0.04 in1 mm	9 mph14 km/h from ENE, gusts 16 mph26 km/h	73%	100%	0
Mon 1a	Rain	40°4° (likely 37°3° to 43°6°)	33°1°	30%, 0.06 in1.5 mm	10 mph16 km/h from ENE, gusts 17 mph27 km/h	73%	100%	0
Mon 2a	Rain	40°4° (likely 38°3° to 42°6°)	33°1°	30%, 0.06 in1.5 mm	12 mph19 km/h from ENE, gusts 18 mph28 km/h	70%	100%	0
Mon 3a	Rain	39°4° (likely 37°3° to 42°6°)	31°−1°	40%, 0.06 in1.5 mm	13 mph21 km/h from NE, gusts 17 mph27 km/h	73%	100%	0
Mon 4a	Rain	39°4° (likely 37°3° to 41°5°)	31°−1°	60%, 0.06 in1.5 mm	14 mph23 km/h from NE, gusts 17 mph27 km/h	73%	100%	0
Mon 5a	Rain	38°3° (likely 37°3° to 41°5°)	29°−2°	60%, 0.06 in1.5 mm	15 mph24 km/h from NE, gusts 19 mph30 km/h	76%	100%	0
Mon 6a	Rain	38°3° (likely 36°2° to 40°4°)	29°−2°	70%, 0.06 in1.5 mm	15 mph24 km/h from ENE, gusts 21 mph33 km/h	76%	100%	0
Mon 7a	Rain	38°3° (likely 35°2° to 39°4°)	29°−2°	80%, 0.25 in6.4 mm	16 mph26 km/h from ENE, gusts 20 mph33 km/h	76%	99%	0
Mon 8a	Rain	36°2° (likely 35°2° to 39°4°)	27°−3°	80%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 22 mph35 km/h	82%	100%	0
Mon 9a	Rain	36°2° (likely 35°2° to 38°3°)	27°−3°	80%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 23 mph37 km/h	85%	100%	0
Mon 10a	Rain	37°3° (likely 35°2° to 39°4°)	28°−2°	80%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 23 mph36 km/h	85%	100%	0
Mon 11a	Rain	37°3° (likely 35°2° to 39°4°)	28°−2°	80%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 23 mph37 km/h	89%	100%	0
Mon 12p	Rain	37°3° (likely 36°2° to 39°4°)	28°−2°	80%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 24 mph38 km/h	89%	100%	0
Mon 1p	Rain	37°3° (likely 36°2° to 39°4°)	28°−2°	90%, 0.34 in8.6 mm	15 mph24 km/h from ENE, gusts 25 mph40 km/h	92%	100%	0
Mon 2p	Rain	37°3° (likely 36°2° to 40°4°)	28°−2°	90%, 0.34 in8.6 mm	15 mph24 km/h from ENE, gusts 27 mph43 km/h	92%	100%	0
Mon 3p	Rain	37°3° (likely 36°2° to 40°4°)	28°−2°	90%, 0.34 in8.6 mm	16 mph26 km/h from ENE, gusts 28 mph45 km/h	96%	100%	0
Mon 4p	Rain	37°3° (likely 35°2° to 40°4°)	28°−2°	90%, 0.34 in8.6 mm	16 mph26 km/h from ENE, gusts 30 mph48 km/h	96%	100%	0

Days ahead

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

Today, Oct 24. Drizzle. High 56°13°, low 36°2°. Typical 51°11° / 32°0°. Rain 0.04 in1 mm, 0% chance. Forecasts agree.
1. Evening
  6 PM–midnight
  Cloudy, 45°7°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Today: Mostly cloudy. High near 56, with temperatures falling to around 49 in the afternoon. North northwest wind around 9 mph.
Tonight: Mostly cloudy, with a low around 36. North wind around 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
56°13°–66°19°
Low, likely
36°2°–44°7°
Typical high / low
51°11° / 32°0°
Wind
25 mph41 km/h, gusts 39 mph63 km/h
UV peak
3
Tomorrow, Oct 25. Rain. High 48°9°, low 35°2°. Typical 50°10° / 31°−1°. Rain 0.2 in5.1 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Rain, 47°8°
  50% chance · 0.25 in6.4 mm
3. Evening
  6 PM–midnight
  Rain, 42°6°
  80% chance · 0.25 in6.4 mm
4. Overnight
  midnight–6 AM
  Rain, 38°3°
  60% chance · 0.34 in8.6 mm
Official NWS forecast
Day: A chance of rain after 1pm. Cloudy. High near 48, with temperatures falling to around 45 in the afternoon. East northeast wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Night: Rain. Cloudy, with a low around 35. Northeast wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
45°7°–49°9°
Low, likely
33°1°–40°4°
Typical high / low
50°10° / 31°−1°
Wind
14 mph22 km/h, gusts 22 mph36 km/h
UV peak
3
Monday, Oct 26. Rain. High 39°4°, low 34°1°. Typical 50°10° / 31°−1°. Rain 0.6 in15 mm, 90% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 36°2°
  80% chance · 1.3 in33 mm
2. Afternoon
  noon–6 PM
  Rain, 37°3°
  100% chance · 1.7 in42 mm
3. Evening
  6 PM–midnight
  Rain, 37°3°
  100% chance · 0.35 in9 mm
4. Overnight
  midnight–6 AM
  Rain, 39°4°
  100% chance · 0.28 in7.2 mm
Official NWS forecast
Day: Rain. Cloudy, with a high near 39. East northeast wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Night: Rain. Cloudy, with a low around 34. East northeast wind 12 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–44°7°
Low, likely
34°1°–39°4°
Typical high / low
50°10° / 31°−1°
Wind
25 mph40 km/h, gusts 37 mph59 km/h
Tuesday, Oct 27. Rain. High 49°9°, low 41°5°. Typical 49°9° / 30°−1°. Rain 0.31 in7.9 mm, 80% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 42°6°
  70% chance · 0.02 in0.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 49°9°
  30% chance · 0.03 in0.8 mm
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain before 1pm. Mostly cloudy, with a high near 49. South wind 7 to 12 mph. Chance of precipitation is 80%.
Night: A slight chance of rain between 7pm and 1am. Mostly cloudy, with a low around 41. South wind 8 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
49°9°–53°12°
Low, likely
37°3°–41°5°
Typical high / low
49°9° / 30°−1°
Wind
21 mph34 km/h, gusts 34 mph54 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 56°13°, low 40°4°. Typical 49°9° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 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: Mostly sunny, with a high near 56. West southwest wind around 12 mph, with gusts as high as 22 mph.
Night: Mostly clear, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–58°14°
Low, likely
40°4°–43°6°
Typical high / low
49°9° / 30°−1°
Wind
21 mph34 km/h, gusts 48 mph77 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 56°13°, low 44°7°. Typical 48°9° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 48°9°
  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 56.
Night: A slight chance of rain after 1am. Partly cloudy, with a low around 44. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–59°15°
Low, likely
37°3°–44°7°
Typical high / low
48°9° / 29°−2°
Wind
16 mph26 km/h, gusts 41 mph66 km/h
UV peak
3
Friday, Oct 30. Rain. High 59°15°, low 45°7°. Typical 48°9° / 29°−2°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain before 7am. Partly sunny, with a high near 59. Chance of precipitation is 20%.
Night: A chance of rain after 7pm. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–61°16°
Low, likely
45°7°–48°9°
Typical high / low
48°9° / 29°−2°
Wind
17 mph27 km/h, gusts 38 mph61 km/h
Saturday, Oct 31. Showers. High 59°15°, low 48°9°. Typical 47°8° / 28°−2°. Rain 0.25 in6.4 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  20% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 60°15°
  30% chance · 0.05 in1.2 mm
3. Evening
  6 PM–midnight
  Showers, 52°11°
  30% chance · 0.22 in5.5 mm
4. Overnight
  midnight–6 AM
  Showers, 44°7°
  30% chance · 0.05 in1.2 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
51°11°–66°19°
Low, likely
39°4°–54°12°
Typical high / low
47°8° / 28°−2°
Wind
20 mph31 km/h, gusts 39 mph63 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 51°11°, low 43°6°. Typical 46°8° / 28°−2°. Rain 0.1 in2.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 41°5°
  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
39°4°–60°16°
Low, likely
32°0°–53°12°
Typical high / low
46°8° / 28°−2°
Wind
18 mph29 km/h, gusts 39 mph63 km/h
UV peak
2
Monday, Nov 2. Cloudy. High 52°11°, low 39°4°. Typical 46°8° / 28°−2°. Rain 0.34 in8.6 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 51°10°
  20% chance · 0.09 in2.3 mm
3. Evening
  6 PM–midnight
  Clear, 46°8°
  20% chance · 0.03 in0.7 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–58°14°
Low, likely
31°−1°–46°8°
Typical high / low
46°8° / 28°−2°
Wind
31 mph50 km/h, gusts 48 mph78 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 56°, low 36°.
Tomorrow
54% chance of rain, high 48°, low 35°, cooling off.
Monday
91% chance of rain, high 39°, low 34°, cooling off.
Rest of week
Highs 49–59°; chance of precipitation on Tuesday.

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

Big Sioux River near Florence

22 mi

Below flood stage

Level: 2.9 ft

Reading from Sat 4 PM · NWS gauge page

For your home

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

Heating this week

About 73% less heating than a typical week.

This week 47Typical 177

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 46
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 9 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 31°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Webster · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 5°3° warmer than typical.

Last 7 days vs normal

On average 15°8° warmer than normal (daily mean temperature).

—SunOct 18
+11°+6°MonOct 19
+11°+6°TueOct 20
+14°+8°WedOct 21
+15°+8°ThuOct 22
+21°+11°FriOct 23
+21°+11°SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 31 min; Losing 2 min 58 s a day; shortest Dec 21, 1 h 48 min less
Golden hour: 5:47–6:47 PM; Morning 7:39–8:39 AM
Blue hour: 6:47–6:59 PM; Morning 7:27–7:39 AM; first light 7:27 AM

Stars tonight? Fair

Mostly clear 3–5 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:10 AM · rises 5:28 PM
Full moon: Oct 25
New moon: Nov 9

Looking south from Grenville. Water in view.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.