Big Sioux River near Florence
16 mi- Level
- 2.9 ft
Reading from Sat 5 AM · NWS gauge page
Observed 5:45 AM CDT at KATY
Wallace, SD weather
Mostly cloudy and 63°17°, rain ~9 AM (40%).
Today: low 38°3° (likely 38°3° to 45°7°), high 57°14° (likely 57°14° to 67°19°).
Now 63°17°
Mostly cloudy
- Wind
- 10 mph17 km/hgusts 16 mph26 km/h
- From the south. Gusts to 30 mph48 km/h around 10 AM
- Dew point
- 48°9°
- Comfortable · down to 40°4° by 11 AM
- UV index
- 0Low
- Moderate 1–3 PM · peak 3
- Air quality
- 57Moderate
- Main pollutant: PM10 (dust)
- Pressure
- 29.96 inHg1015 hPa
- Rising · +0.06 inHg+1.9 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
Good hours for
This morningDown to 53°12° by 9 AM · Rain 8–11 AM (40%) · gusts to 30 mph48 km/h
This afternoonNear 53°12° · gusts to 29 mph47 km/h · Cloudy
TonightDown to 40°4° by 5 AM · Mostly cloudy
Tomorrow morningUp to 45°7° by 10 AM · rain chance 20% · Cloudy
Tomorrow afternoonNear 47°8° · Rain 2–6 PM (50%)
Tomorrow nightDown to 37°3° by 5 AM · Rain all night (80%)
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 6a | Partly cloudy | 60°16° (likely 60°16° to 62°17°) | 60°16° | 5% | 16 mph26 km/h from SSW, gusts 17 mph27 km/h | 69% | 31% | 0 |
| Sat 7a | Clear | 59°15° (likely 58°14° to 60°16°) | 59°15° | 30%, 0.01 in0.3 mm | 15 mph24 km/h from W, gusts 24 mph39 km/h | 69% | 40% | 0 |
| Sat 8a | Rain | 55°13° (likely 53°12° to 56°13°) | 55°13° | 40%, 0.01 in0.3 mm | 17 mph27 km/h from WNW, gusts 29 mph46 km/h | 69% | 52% | 0 |
| Sat 9a | Rain | 53°12° (likely 50°10° to 53°12°) | 53°12° | 40%, 0.01 in0.3 mm | 18 mph29 km/h from NW, gusts 28 mph44 km/h | 68% | 85% | 0 |
| Sat 10a | Rain | 53°12° (likely 48°9° to 53°12°) | 53°12° | 30%, 0.01 in0.3 mm | 17 mph27 km/h from NW, gusts 30 mph48 km/h | 66% | 92% | 1 |
| Sat 11a | Cloudy | 53°12° (likely 47°8° to 53°12°) | 53°12° | 20%, 0.01 in0.3 mm | 17 mph27 km/h from NW, gusts 24 mph39 km/h | 61% | 96% | 1 |
| Sat 12p | Cloudy | 53°12° (likely 47°8° to 53°12°) | 53°12° | 5%, 0.01 in0.3 mm | 16 mph26 km/h from NW, gusts 29 mph47 km/h | 59% | 97% | 2 |
| Sat 1p | Drizzle | 53°12° (likely 47°8° to 53°12°) | 53°12° | 10% | 15 mph24 km/h from NW, gusts 21 mph33 km/h | 54% | 95% | 3 |
| Sat 2p | Cloudy | 55°13° (likely 49°9° to 55°13°) | 55°13° | 5% | 15 mph24 km/h from NW, gusts 22 mph35 km/h | 49% | 86% | 3 |
| Sat 3p | Cloudy | 54°12° (likely 50°10° to 54°12°) | 54°12° | 5% | 13 mph21 km/h from NW, gusts 20 mph33 km/h | 48% | 87% | 2 |
| Sat 4p | Cloudy | 53°12° (likely 50°10° to 54°12°) | 53°12° | 0% | 12 mph19 km/h from NNW, gusts 18 mph29 km/h | 48% | 80% | 1 |
| Sat 5p | Cloudy | 53°12° (likely 50°10° to 54°12°) | 53°12° | 0% | 10 mph16 km/h from NNW, gusts 16 mph25 km/h | 46% | 81% | 0 |
| Sat 6p | Cloudy | 51°11° (likely 49°9° to 52°11°) | 51°11° | 0% | 7 mph11 km/h from NNW, gusts 12 mph20 km/h | 48% | 84% | 0 |
| Sat 7p | Cloudy | 49°9° (likely 47°8° to 50°10°) | 47°8° | 0% | 5 mph8 km/h from NNW, gusts 10 mph15 km/h | 50% | 85% | 0 |
| Sat 8p | Cloudy | 47°8° (likely 45°7° to 49°9°) | 45°7° | 0% | 5 mph8 km/h from NNW, gusts 8 mph14 km/h | 51% | 82% | 0 |
| Sat 9p | Clear | 46°8° (likely 43°6° to 47°8°) | 44°7° | 0% | 5 mph8 km/h from NNW, gusts 8 mph13 km/h | 53% | 43% | 0 |
| Sat 10p | Mostly cloudy | 45°7° (likely 41°5° to 46°8°) | 43°6° | 0% | 5 mph8 km/h from NNW, gusts 9 mph15 km/h | 53% | 47% | 0 |
| Sat 11p | Clear | 45°7° (likely 39°4° to 45°7°) | 43°6° | 0% | 5 mph8 km/h from NNW, gusts 10 mph15 km/h | 51% | 42% | 0 |
| Sun 12a | Clear | 44°7° (likely 38°3° to 45°7°) | 42°6° | 0% | 3 mph5 km/h from N, gusts 8 mph14 km/h | 53% | 41% | 0 |
| Sun 1a | Mostly cloudy | 43°6° (likely 37°3° to 44°7°) | 40°4° | 0% | 5 mph8 km/h from N, gusts 7 mph11 km/h | 53% | 45% | 0 |
| Sun 2a | Cloudy | 43°6° (likely 36°2° to 43°6°) | 41°5° | 0% | 3 mph5 km/h from N, gusts 7 mph11 km/h | 53% | 83% | 0 |
| Sun 3a | Cloudy | 42°6° (likely 35°2° to 42°6°) | 40°4° | 0% | 3 mph5 km/h from N, gusts 8 mph13 km/h | 55% | 85% | 0 |
| Sun 4a | Mostly cloudy | 42°6° (likely 34°1° to 42°6°) | 39°4° | 0% | 5 mph8 km/h from NNE, gusts 7 mph11 km/h | 55% | 57% | 0 |
| Sun 5a | Cloudy | 40°4° (likely 34°1° to 42°6°) | 38°3° | 0% | 3 mph5 km/h from NNE, gusts 7 mph12 km/h | 57% | 83% | 0 |
| Sun 6a | Cloudy | 40°4° (likely 34°1° to 42°6°) | 37°3° | 0% | 5 mph8 km/h from NE, gusts 7 mph11 km/h | 57% | 78% | 0 |
| Sun 7a | Cloudy | 40°4° (likely 34°1° to 42°6°) | 37°3° | 5% | 5 mph8 km/h from NE, gusts 9 mph14 km/h | 57% | 94% | 0 |
| Sun 8a | Cloudy | 39°4° (likely 34°1° to 43°6°) | 36°2° | 5% | 5 mph8 km/h from ENE, gusts 12 mph19 km/h | 59% | 100% | 0 |
| Sun 9a | Cloudy | 41°5° (likely 37°3° to 44°7°) | 37°3° | 10% | 6 mph10 km/h from ENE, gusts 10 mph16 km/h | 57% | 95% | 0 |
| Sun 10a | Cloudy | 45°7° (likely 41°5° to 45°7°) | 42°6° | 20% | 6 mph10 km/h from ENE, gusts 8 mph12 km/h | 49% | 98% | 1 |
| Sun 11a | Cloudy | 45°7° (likely 42°6° to 47°8°) | 41°5° | 20% | 7 mph11 km/h from ENE, gusts 13 mph21 km/h | 51% | 100% | 1 |
| Sun 12p | Cloudy | 46°8° (likely 44°7° to 47°8°) | 42°6° | 20% | 7 mph11 km/h from E, gusts 13 mph20 km/h | 49% | 100% | 2 |
| Sun 1p | Cloudy | 46°8° (likely 44°7° to 47°8°) | 42°6° | 5%, 0.07 in1.8 mm | 8 mph13 km/h from ENE, gusts 14 mph22 km/h | 49% | 100% | 1 |
| Sun 2p | Drizzle | 46°8° (likely 43°6° to 47°8°) | 42°6° | 40%, 0.07 in1.8 mm | 8 mph13 km/h from ENE, gusts 12 mph20 km/h | 49% | 100% | 1 |
| Sun 3p | Rain | 46°8° (likely 41°5° to 47°8°) | 42°6° | 50%, 0.07 in1.8 mm | 8 mph13 km/h from ENE, gusts 12 mph20 km/h | 51% | 100% | 1 |
| Sun 4p | Rain | 46°8° (likely 39°4° to 46°8°) | 42°6° | 50%, 0.07 in1.8 mm | 8 mph13 km/h from ENE, gusts 15 mph24 km/h | 51% | 100% | 1 |
| Sun 5p | Drizzle | 47°8° (likely 39°4° to 47°8°) | 43°6° | 50%, 0.07 in1.8 mm | 8 mph13 km/h from ENE, gusts 13 mph22 km/h | 51% | 100% | 0 |
| Sun 6p | Drizzle | 46°8° (likely 39°4° to 46°8°) | 42°6° | 40%, 0.07 in1.8 mm | 7 mph11 km/h from ENE, gusts 15 mph24 km/h | 56% | 100% | 0 |
| Sun 7p | Rain | 45°7° (likely 39°4° to 45°7°) | 41°5° | 80%, 0.06 in1.5 mm | 8 mph13 km/h from NE, gusts 14 mph23 km/h | 60% | 100% | 0 |
| Sun 8p | Drizzle | 44°7° (likely 39°4° to 44°7°) | 39°4° | 80%, 0.06 in1.5 mm | 8 mph13 km/h from ENE, gusts 15 mph24 km/h | 62% | 100% | 0 |
| Sun 9p | Rain | 43°6° (likely 38°3° to 43°6°) | 38°3° | 80%, 0.06 in1.5 mm | 8 mph13 km/h from ENE, gusts 14 mph23 km/h | 65% | 100% | 0 |
| Sun 10p | Rain | 42°6° (likely 38°3° to 42°6°) | 37°3° | 80%, 0.06 in1.5 mm | 8 mph13 km/h from ENE, gusts 15 mph24 km/h | 70% | 100% | 0 |
| Sun 11p | Rain | 42°6° (likely 39°4° to 42°6°) | 37°3° | 80%, 0.06 in1.5 mm | 8 mph13 km/h from ENE, gusts 17 mph27 km/h | 70% | 100% | 0 |
| Mon 12a | Rain | 41°5° (likely 39°4° to 43°6°) | 35°2° | 80%, 0.06 in1.5 mm | 9 mph14 km/h from ENE, gusts 19 mph30 km/h | 73% | 100% | 0 |
| Mon 1a | Rain | 41°5° (likely 39°4° to 44°7°) | 35°2° | 60%, 0.01 in0.3 mm | 9 mph14 km/h from ENE, gusts 20 mph31 km/h | 73% | 100% | 0 |
| Mon 2a | Rain | 40°4° (likely 40°4° to 46°8°) | 33°1° | 60%, 0.01 in0.3 mm | 10 mph16 km/h from ENE, gusts 20 mph33 km/h | 76% | 100% | 0 |
| Mon 3a | Rain | 40°4° (likely 39°4° to 46°8°) | 33°1° | 60%, 0.01 in0.3 mm | 10 mph16 km/h from ENE, gusts 22 mph35 km/h | 76% | 100% | 0 |
| Mon 4a | Rain | 39°4° (likely 38°3° to 46°8°) | 32°0° | 60%, 0.01 in0.3 mm | 12 mph19 km/h from ENE, gusts 21 mph35 km/h | 79% | 100% | 0 |
| Mon 5a | Rain | 37°3° (likely 37°3° to 45°7°) | 29°−2° | 60%, 0.01 in0.3 mm | 12 mph19 km/h from ENE, gusts 22 mph36 km/h | 85% | 97% | 0 |
Days ahead
Tap a day for its hours and the official wording.
Today, Oct 24. Rain. High 57°14°, low 38°3°. Rain 0.07 in1.8 mm, 40% chance. Mostly agree.
Morning
6 AM–noon
Rain, 55°13°40% chance · 0.05 in1.3 mm
Afternoon
noon–6 PM
Cloudy, 55°13°Dry
Evening
6 PM–midnight
Clear, 47°8°Dry
Overnight
midnight–6 AM
Cloudy, 40°4°Dry
Official NWS forecast
Today: A chance of rain between 7am and noon. Partly sunny. High near 57, with temperatures falling to around 53 in the afternoon. West northwest wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Tonight: Mostly cloudy, with a low around 38. North wind 3 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 57°14°–67°19°
- Low, likely
- 38°3°–45°7°
- Wind
- 22 mph35 km/h, gusts 34 mph55 km/h
- UV peak
- 3
Tomorrow, Oct 25. Rain. High 48°9°, low 34°1°. Rain 0.24 in6.1 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 39°4°20% chance
Afternoon
noon–6 PM
Rain, 47°8°50% chance · 0.35 in8.9 mm
Evening
6 PM–midnight
Rain, 44°7°80% chance · 0.37 in9.4 mm
Overnight
midnight–6 AM
Rain, 37°3°80% chance · 0.11 in2.8 mm
Official NWS forecast
Day: A chance of rain after 10am. Cloudy, with a high near 48. East northeast wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Night: Rain. Cloudy, with a low around 34. East northeast wind 7 to 12 mph, with gusts as high as 21 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
- 44°7°–48°9°
- Low, likely
- 34°1°–41°5°
- Wind
- 14 mph23 km/h, gusts 21 mph33 km/h
- UV peak
- 2
Monday, Oct 26. Rain. High 43°6°, low 34°1°. Rain 0.85 in22 mm, 90% chance. Mostly agree.
Morning
6 AM–noon
Drizzle, 39°4°90% chance · 0.19 in4.8 mm
Afternoon
noon–6 PM
Rain, 38°3°100% chance · 0.35 in8.9 mm
Evening
6 PM–midnight
Drizzle, 39°4°100% chance · 0.32 in8.1 mm
Overnight
midnight–6 AM
Drizzle, 41°5°90% chance · 0.11 in2.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain. Cloudy, with a high near 43. East northeast wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Night: Rain. Cloudy, with a low around 34. East wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 41°5°–45°7°
- Low, likely
- 34°1°–39°4°
- Wind
- 25 mph40 km/h, gusts 37 mph60 km/h
Tuesday, Oct 27. Rain. High 50°10°, low 40°4°. Rain 0.2 in5.1 mm, 80% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 42°6°60% chance
Afternoon
noon–6 PM
Sunny, 51°11°Dry
Evening
6 PM–midnight
Drizzle, 50°10°30% chance · 0.07 in1.8 mm
Overnight
midnight–6 AM
Drizzle, 45°7°30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain before 1pm. Mostly cloudy, with a high near 50. South southeast wind around 10 mph. Chance of precipitation is 80%.
Night: A chance of rain after 7pm. Mostly cloudy, with a low around 40. South wind 6 to 10 mph. Chance of precipitation is 50%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 50°10°–56°13°
- Low, likely
- 39°4°–42°6°
- Wind
- 19 mph31 km/h, gusts 37 mph59 km/h
- UV peak
- 3
Wednesday, Oct 28. Rain. High 55°13°, low 37°3°. Rain 0.01 in0.3 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 42°5°Dry
Afternoon
noon–6 PM
Sunny, 57°14°Dry
Evening
6 PM–midnight
Clear, 48°9°Dry
Overnight
midnight–6 AM
Clear, 40°4°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 1pm. Partly sunny, with a high near 55. Southwest wind 10 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Night: Partly cloudy, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 55°13°–59°15°
- Low, likely
- 37°3°–45°7°
- Wind
- 20 mph33 km/h, gusts 44 mph70 km/h
- UV peak
- 3
Thursday, Oct 29. Partly sunny. High 56°13°, low 40°4°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 41°5°Dry
Afternoon
noon–6 PM
Sunny, 57°14°Dry
Evening
6 PM–midnight
Mostly clear, 49°10°Dry
Overnight
midnight–6 AM
Mostly clear, 46°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 56.
Night: Partly cloudy, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 54°12°–60°16°
- Low, likely
- 36°2°–43°6°
- Wind
- 14 mph22 km/h, gusts 41 mph65 km/h
- UV peak
- 3
Friday, Oct 30. Drizzle. High 56°13°, low 40°4°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 58°14°Dry
Evening
6 PM–midnight
Drizzle, 54°12°20% chance · 0.02 in0.5 mm
Overnight
midnight–6 AM
Drizzle, 53°12°30% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain and snow after 7am. Partly sunny, with a high near 56. Chance of precipitation is 20%.
Night: A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 54°12°–65°18°
- Low, likely
- 40°4°–52°11°
- Wind
- 14 mph22 km/h, gusts 26 mph41 km/h
- UV peak
- 3
Saturday, Oct 31. Drizzle. High 63°17°, low 52°11°. Rain 0.13 in3.3 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Fog, 55°13°30% chance
Afternoon
noon–6 PM
Cloudy, 64°18°30% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
Drizzle, 58°14°30% chance · 0.04 in1.1 mm
Overnight
midnight–6 AM
Drizzle, 53°12°30% chance · 0.06 in1.4 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°–67°19°
- Low, likely
- 47°8°–57°14°
- Wind
- 14 mph22 km/h, gusts 25 mph41 km/h
- UV peak
- 3
Sunday, Nov 1. Drizzle. High 56°13°, low 46°8°. Rain 0.15 in3.8 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 50°10°20% chance · 0.04 in1 mm
Afternoon
noon–6 PM
Cloudy, 51°11°Dry
Evening
6 PM–midnight
Cloudy, 49°9°Dry
Overnight
midnight–6 AM
Cloudy, 46°8°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
- 50°10°–60°16°
- Low, likely
- 38°3°–56°13°
- Wind
- 18 mph29 km/h, gusts 26 mph42 km/h
- UV peak
- 1
Monday, Nov 2. Drizzle. High 52°11°, low 43°6°. Rain 0.68 in17 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Rain, 45°7°Dry
Afternoon
noon–6 PM
Drizzle, 46°8°20% chance · 0.3 in0.7 cm
Evening
6 PM–midnight
Rain, 45°7°30% chance · 0.1 in0.3 cm
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
- 49°9°–58°14°
- Low, likely
- 34°1°–53°12°
- Wind
- 24 mph38 km/h, gusts 44 mph70 km/h
The outlook
Today
40% chance of rain, high 57°, low 38°.
Tomorrow
54% chance of rain, high 48°, low 34°, cooling off.
Monday
86% chance of rain, high 43°, low 34°, cooling off.
Rest of week
Highs 50–63°; chance of precipitation on Tuesday, Wednesday.
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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Big Sioux River near Watertown
16 mi- Level
- 3.8 ft
- Flow
- 13 cfs
Reading from Sat 5 AM · NWS gauge page
Big Sioux River at Lake Kampeska
18 mi- Level
- 18.5 ft
Reading from Sat 5:15 AM · NWS gauge page
Lake Kampeska at Watertown Water Plant
18 mi- Level
- 17.4 ft
Reading from Sat 5:15 AM · NWS gauge page
Sun & moon
Sun
Sunrise 7:57 AM, sunset 6:29 PM.
- Daylight
- 10 h 32 min
- Losing 2 min 58 s a day; shortest Dec 21, 1 h 46 min less
- Golden hour
- 5:48–6:48 PM
- Morning 7:39–8:39 AM
- Blue hour
- 6:48–6:59 PM
- Morning 7:27–7:39 AM; first light 7:27 AM
Stars tonight? Poor
Clouds most of the night (about 35% cover).
Moon
Waxing gibbous
96% lit · growing
- Today
- sets 6:10 AM · rises 5:29 PM
- Full moon
- Oct 25
- New moon
- Nov 9
