Big Sioux River near Castlewood
4.8 mi- Level
- 4.9 ft
- Flow
- 39 cfs
Reading from Sat 8:45 AM · NWS gauge page
Appearance
Observed 10:45 AM CDT at KATY
Overcast and 48°9°, 8°4° warmer than a typical Oct 24.
Today: low 38°3° (likely 38°3° to 45°7°), high 61°16° (likely 61°16° to 65°18°).
Now 48°9°
Cloudy
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 11a | Rain | 53°12° (likely 48°9° to 53°12°) | 53°12° | 40%, 0.01 in0.3 mm | 17 mph27 km/h from NNW, gusts 34 mph54 km/h | 77% | 99% | 1 |
| Sat 12p | Rain | 52°11° (likely 47°8° to 52°11°) | 52°11° | 30%, 0.01 in0.3 mm | 16 mph26 km/h from NNW, gusts 24 mph39 km/h | 74% | 100% | 2 |
| Sat 1p | Cloudy | 51°11° (likely 48°9° to 51°11°) | 51°11° | 30%, 0.02 in0.5 mm | 15 mph24 km/h from NW, gusts 21 mph33 km/h | 71% | 97% | 2 |
| Sat 2p | Rain | 53°12° (likely 47°8° to 53°12°) | 53°12° | 20%, 0.02 in0.5 mm | 14 mph23 km/h from NNW, gusts 19 mph30 km/h | 61% | 97% | 3 |
| Sat 3p | Drizzle | 56°13° (likely 47°8° to 56°13°) | 56°13° | 10%, 0.02 in0.5 mm | 13 mph21 km/h from NNW, gusts 16 mph26 km/h | 49% | 100% | 2 |
| Sat 4p | Mostly cloudy | 56°13° (likely 47°8° to 56°13°) | 56°13° | 5%, 0.02 in0.5 mm | 12 mph19 km/h from NNW, gusts 14 mph22 km/h | 48% | 99% | 1 |
| Sat 5p | Cloudy | 55°13° (likely 48°9° to 55°13°) | 55°13° | 0%, 0.02 in0.5 mm | 10 mph16 km/h from NNW, gusts 12 mph19 km/h | 46% | 93% | 0 |
| Sat 6p | Cloudy | 53°12° (likely 48°9° to 53°12°) | 53°12° | 0%, 0.02 in0.5 mm | 7 mph11 km/h from NNW, gusts 10 mph16 km/h | 50% | 88% | 0 |
| Sat 7p | Cloudy | 49°9° (likely 47°8° to 49°9°) | 47°8° | 0% | 5 mph8 km/h from NNW, gusts 9 mph15 km/h | 56% | 90% | 0 |
| Sat 8p | Cloudy | 48°9° (likely 46°8° to 48°9°) | 46°8° | 0% | 5 mph8 km/h from N, gusts 9 mph14 km/h | 56% | 82% | 0 |
| Sat 9p | Cloudy | 47°8° (likely 44°7° to 47°8°) | 46°8° | 0% | 3 mph5 km/h from N, gusts 7 mph11 km/h | 56% | 83% | 0 |
| Sat 10p | Cloudy | 46°8° (likely 43°6° to 46°8°) | 45°7° | 0% | 3 mph5 km/h from N, gusts 8 mph12 km/h | 56% | 80% | 0 |
| Sat 11p | Cloudy | 45°7° (likely 41°5° to 45°7°) | 44°7° | 0% | 3 mph5 km/h from N, gusts 7 mph12 km/h | 58% | 75% | 0 |
| Sun 12a | Cloudy | 44°7° (likely 40°4° to 44°7°) | 42°6° | 0% | 3 mph5 km/h from NNE, gusts 7 mph12 km/h | 58% | 67% | 0 |
| Sun 1a | Partly cloudy | 43°6° (likely 39°4° to 43°6°) | 41°5° | 0% | 3 mph5 km/h from NNE, gusts 10 mph16 km/h | 57% | 63% | 0 |
| Sun 2a | Mostly cloudy | 43°6° (likely 39°4° to 43°6°) | 40°4° | 0% | 5 mph8 km/h from NNE, gusts 10 mph16 km/h | 55% | 47% | 0 |
| Sun 3a | Mostly cloudy | 42°6° (likely 38°3° to 42°6°) | 39°4° | 0% | 5 mph8 km/h from NE, gusts 10 mph16 km/h | 57% | 54% | 0 |
| Sun 4a | Cloudy | 41°5° (likely 36°2° to 43°6°) | 37°3° | 0% | 6 mph10 km/h from NE, gusts 10 mph17 km/h | 57% | 80% | 0 |
| Sun 5a | Cloudy | 41°5° (likely 36°2° to 43°6°) | 37°3° | 5% | 6 mph10 km/h from NE, gusts 11 mph18 km/h | 57% | 91% | 0 |
| Sun 6a | Cloudy | 40°4° (likely 37°3° to 44°7°) | 36°2° | 5% | 6 mph10 km/h from NE, gusts 11 mph17 km/h | 59% | 100% | 0 |
| Sun 7a | Cloudy | 40°4° (likely 38°3° to 44°7°) | 35°2° | 20%, 0.01 in0.3 mm | 7 mph11 km/h from ENE, gusts 12 mph20 km/h | 59% | 99% | 0 |
| Sun 8a | Cloudy | 39°4° (likely 37°3° to 44°7°) | 34°1° | 20%, 0.01 in0.3 mm | 7 mph11 km/h from ENE, gusts 12 mph20 km/h | 62% | 99% | 0 |
| Sun 9a | Cloudy | 41°5° (likely 39°4° to 44°7°) | 36°2° | 40%, 0.01 in0.3 mm | 7 mph11 km/h from ENE, gusts 12 mph19 km/h | 62% | 100% | 0 |
| Sun 10a | Cloudy | 44°7° (likely 42°6° to 45°7°) | 39°4° | 40%, 0.01 in0.3 mm | 8 mph13 km/h from ENE, gusts 12 mph20 km/h | 60% | 100% | 0 |
| Sun 11a | Rain | 46°8° (likely 42°6° to 46°8°) | 41°5° | 50%, 0.01 in0.3 mm | 9 mph14 km/h from ENE, gusts 13 mph21 km/h | 56% | 100% | 1 |
| Sun 12p | Rain | 45°7° (likely 41°5° to 47°8°) | 40°4° | 60%, 0.01 in0.3 mm | 9 mph14 km/h from ENE, gusts 15 mph24 km/h | 60% | 100% | 0 |
| Sun 1p | Rain | 45°7° (likely 41°5° to 47°8°) | 40°4° | 70%, 0.06 in1.5 mm | 9 mph14 km/h from ENE, gusts 14 mph22 km/h | 60% | 100% | 1 |
| Sun 2p | Drizzle | 44°7° (likely 41°5° to 46°8°) | 39°4° | 70%, 0.06 in1.5 mm | 9 mph14 km/h from ENE, gusts 12 mph20 km/h | 60% | 100% | 0 |
| Sun 3p | Drizzle | 44°7° (likely 40°4° to 45°7°) | 39°4° | 60%, 0.06 in1.5 mm | 9 mph14 km/h from NE, gusts 15 mph25 km/h | 60% | 100% | 0 |
| Sun 4p | Drizzle | 43°6° (likely 40°4° to 44°7°) | 37°3° | 50%, 0.06 in1.5 mm | 10 mph16 km/h from NE, gusts 19 mph31 km/h | 65% | 100% | 0 |
| Sun 5p | Rain | 43°6° (likely 39°4° to 44°7°) | 37°3° | 50%, 0.06 in1.5 mm | 10 mph16 km/h from NE, gusts 20 mph32 km/h | 65% | 100% | 0 |
| Sun 6p | Rain | 43°6° (likely 39°4° to 43°6°) | 37°3° | 50%, 0.06 in1.5 mm | 12 mph19 km/h from NE, gusts 18 mph29 km/h | 67% | 100% | 0 |
| Sun 7p | Cloudy | 41°5° (likely 39°4° to 42°6°) | 35°2° | 40%, 0.06 in1.5 mm | 10 mph16 km/h from NE, gusts 17 mph28 km/h | 73% | 100% | 0 |
| Sun 8p | Rain | 41°5° (likely 39°4° to 42°6°) | 34°1° | 50%, 0.06 in1.5 mm | 12 mph19 km/h from NE, gusts 21 mph34 km/h | 73% | 100% | 0 |
| Sun 9p | Drizzle | 41°5° (likely 39°4° to 42°6°) | 35°2° | 50%, 0.06 in1.5 mm | 10 mph16 km/h from NE, gusts 22 mph35 km/h | 73% | 100% | 0 |
| Sun 10p | Drizzle | 41°5° (likely 38°3° to 42°6°) | 34°1° | 50%, 0.06 in1.5 mm | 12 mph19 km/h from NE, gusts 21 mph34 km/h | 73% | 99% | 0 |
| Sun 11p | Drizzle | 41°5° (likely 38°3° to 41°5°) | 35°2° | 60%, 0.06 in1.5 mm | 10 mph16 km/h from ENE, gusts 20 mph33 km/h | 76% | 100% | 0 |
| Mon 12a | Drizzle | 41°5° (likely 38°3° to 41°5°) | 34°1° | 70%, 0.06 in1.5 mm | 12 mph19 km/h from ENE, gusts 20 mph32 km/h | 79% | 100% | 0 |
| Mon 1a | Drizzle | 40°4° (likely 39°4° to 41°5°) | 33°1° | 90%, 0.16 in4.1 mm | 12 mph19 km/h from ENE, gusts 20 mph33 km/h | 82% | 100% | 0 |
| Mon 2a | Rain | 40°4° (likely 39°4° to 41°5°) | 33°1° | 70%, 0.16 in4.1 mm | 13 mph21 km/h from ENE, gusts 22 mph36 km/h | 82% | 100% | 0 |
| Mon 3a | Rain | 39°4° (likely 39°4° to 40°4°) | 31°−1° | 80%, 0.16 in4.1 mm | 13 mph21 km/h from ENE, gusts 24 mph38 km/h | 85% | 100% | 0 |
| Mon 4a | Rain | 38°3° (likely 38°3° to 40°4°) | 30°−1° | 90%, 0.16 in4.1 mm | 14 mph23 km/h from ENE, gusts 25 mph41 km/h | 89% | 100% | 0 |
| Mon 5a | Rain | 38°3° (likely 38°3° to 40°4°) | 29°−2° | 90%, 0.16 in4.1 mm | 15 mph24 km/h from ENE, gusts 26 mph41 km/h | 89% | 100% | 0 |
| Mon 6a | Rain | 38°3° (likely 38°3° to 40°4°) | 29°−2° | 100%, 0.16 in4.1 mm | 16 mph26 km/h from ENE, gusts 27 mph43 km/h | 89% | 100% | 0 |
| Mon 7a | Rain | 38°3° (likely 37°3° to 40°4°) | 29°−2° | 100%, 0.37 in9.4 mm | 17 mph27 km/h from ENE, gusts 28 mph45 km/h | 89% | 100% | 0 |
| Mon 8a | Rain | 37°3° (likely 37°3° to 41°5°) | 27°−3° | 100%, 0.37 in9.4 mm | 17 mph27 km/h from ENE, gusts 29 mph46 km/h | 92% | 100% | 0 |
| Mon 9a | Rain | 38°3° (likely 37°3° to 40°4°) | 29°−2° | 100%, 0.37 in9.4 mm | 17 mph27 km/h from ENE, gusts 28 mph45 km/h | 92% | 100% | 0 |
| Mon 10a | Rain | 39°4° (likely 37°3° to 40°4°) | 30°−1° | 100%, 0.37 in9.4 mm | 17 mph27 km/h from ENE, gusts 27 mph43 km/h | 92% | 100% | 0 |
Afternoon
noon–6 PM
30% chance · 0.11 in2.8 mm
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: A chance of rain before 3pm. Mostly cloudy. High near 61, with temperatures falling to around 55 in the afternoon. North northwest wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Tonight: Mostly cloudy. Low around 38, with temperatures rising to around 41 overnight. North northeast wind 3 to 7 mph. New rainfall amounts less than a tenth of an inch possible.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
50% chance · 0.05 in1.3 mm
Afternoon
noon–6 PM
70% chance · 0.31 in7.9 mm
Evening
6 PM–midnight
60% chance · 0.36 in9.1 mm
Overnight
midnight–6 AM
90% chance · 0.86 in22 mm
Official NWS forecast
Day: Rain likely after 7am. Cloudy. High near 47, with temperatures falling to around 43 in the afternoon. East northeast wind 6 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Night: Rain. Cloudy, with a low around 35. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
100% chance · 1.7 in44 mm
Afternoon
noon–6 PM
100% chance · 0.38 in9.7 mm
Evening
6 PM–midnight
100% chance · 0.27 in6.9 mm
Overnight
midnight–6 AM
90% chance · 0.06 in1.6 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain. Cloudy, with a high near 44. East northeast wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Night: Rain. Cloudy, with a low around 35. East southeast wind 10 to 17 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
20% chance · 0.05 in1.2 mm
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain likely before 7am. Mostly cloudy, with a high near 54. South southwest wind around 10 mph. Chance of precipitation is 70%.
Night: A chance of rain between 7pm and 1am. Mostly cloudy, with a low around 42. South wind around 10 mph. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 61. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Night: Partly cloudy, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
30% chance · 0.11 in2.8 mm
Overnight
midnight–6 AM
30% chance · 0.11 in2.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after 1pm. Partly sunny, with a high near 64. Chance of precipitation is 20%.
Night: A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
40% chance · 0.04 in1 mm
Afternoon
noon–6 PM
40% chance · 0.04 in1.1 mm
Evening
6 PM–midnight
40% chance · 0.03 in0.9 mm
Overnight
midnight–6 AM
30% 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.
Morning
6 AM–noon
20% chance · 0.06 in1.5 mm
Afternoon
noon–6 PM
20% chance · 0.14 in3.5 mm
Evening
6 PM–midnight
20% chance · 0.09 in2.2 mm
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
20% chance · 0.05 in1.3 mm
Evening
6 PM–midnight
30% chance · 0.02 in0.6 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.
37% chance of rain, high 61°, low 38°.
74% chance of rain, high 47°, low 35°, cooling off.
99% chance of rain, high 44°, low 35°, cooling off.
Highs 54–64°; chance of precipitation on Tuesday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (ABR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Reading from Sat 8:45 AM · NWS gauge page
Reading from Sat 9 AM · NWS gauge page
Reading from Sat 9 AM · NWS gauge page
Reading from Sat 8:45 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 76% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 10 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 43°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 8°4° warmer than typical.
On average 10°5° warmer than normal (daily mean temperature).
Claremont Colony weather by month: normals, records, snow and freeze dates
Sunrise 7:55 AM, sunset 6:28 PM.
Clouds most of the night (about 79% cover).
Waxing gibbous
97% lit · growing