Big Sioux River near Watertown
8.6 mi- Level
- 3.8 ft
- Flow
- 13 cfs
Reading from Sat 11 AM · NWS gauge page
Appearance
Observed 12:30 PM CDT at KATY
Windy and 48°9°.
Today: low 35°2° (likely 35°2° to 44°7°), high 58°14° (likely 58°14° to 67°19°).
Now 48°9°
Windy · Feels like 41°5°
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 12p | Rain | 49°9° (likely 47°8° to 49°9°) | 43°6° | 20%, 0.01 in0.3 mm | 18 mph29 km/h from NW, gusts 28 mph46 km/h | 71% | 85% | 2 |
| Sat 1p | Rain | 48°9° (likely 46°8° to 49°9°) | 42°6° | 20% | 17 mph27 km/h from NW, gusts 23 mph37 km/h | 71% | 100% | 3 |
| Sat 2p | Cloudy | 49°9° (likely 47°8° to 51°11°) | 43°6° | 5% | 16 mph26 km/h from NNW, gusts 19 mph30 km/h | 66% | 87% | 3 |
| Sat 3p | Cloudy | 49°9° (likely 49°9° to 52°11°) | 43°6° | 5% | 15 mph24 km/h from NNW, gusts 17 mph27 km/h | 63% | 90% | 2 |
| Sat 4p | Partly sunny | 51°11° (likely 49°9° to 53°12°) | 46°8° | 0% | 13 mph21 km/h from NNW, gusts 16 mph25 km/h | 54% | 82% | 1 |
| Sat 5p | Cloudy | 54°12° (likely 49°9° to 54°12°) | 54°12° | 0% | 10 mph16 km/h from NNW, gusts 15 mph23 km/h | 43% | 94% | 0 |
| Sat 6p | Cloudy | 52°11° (likely 49°9° to 52°11°) | 52°11° | 0% | 7 mph11 km/h from NNW, gusts 11 mph18 km/h | 44% | 87% | 0 |
| Sat 7p | Cloudy | 49°9° (likely 47°8° to 49°9°) | 47°8° | 0% | 6 mph10 km/h from NNW, gusts 10 mph16 km/h | 50% | 85% | 0 |
| Sat 8p | Cloudy | 47°8° (likely 45°7° to 48°9°) | 45°7° | 0% | 5 mph8 km/h from NNW, gusts 9 mph15 km/h | 51% | 86% | 0 |
| Sat 9p | Cloudy | 46°8° (likely 44°7° to 47°8°) | 45°7° | 0% | 3 mph5 km/h from N, gusts 9 mph15 km/h | 53% | 81% | 0 |
| Sat 10p | Cloudy | 45°7° (likely 43°6° to 45°7°) | 44°7° | 0% | 3 mph5 km/h from N, gusts 8 mph14 km/h | 53% | 82% | 0 |
| Sat 11p | Cloudy | 44°7° (likely 41°5° to 44°7°) | 42°6° | 0% | 3 mph5 km/h from N, gusts 6 mph10 km/h | 53% | 81% | 0 |
| Sun 12a | Cloudy | 42°6° (likely 39°4° to 43°6°) | 40°4° | 0% | 3 mph5 km/h from N, gusts 6 mph9 km/h | 57% | 76% | 0 |
| Sun 1a | Clear | 41°5° (likely 38°3° to 42°6°) | 39°4° | 0% | 3 mph5 km/h from N, gusts 7 mph12 km/h | 59% | 41% | 0 |
| Sun 2a | Clear | 40°4° (likely 37°3° to 42°6°) | 38°3° | 0% | 3 mph5 km/h from NNE, gusts 7 mph12 km/h | 59% | 42% | 0 |
| Sun 3a | Clear | 40°4° (likely 36°2° to 41°5°) | 38°3° | 0% | 3 mph5 km/h from NNE, gusts 8 mph12 km/h | 59% | 38% | 0 |
| Sun 4a | Clear | 39°4° (likely 35°2° to 41°5°) | 36°2° | 0% | 5 mph8 km/h from NE, gusts 8 mph13 km/h | 59% | 42% | 0 |
| Sun 5a | Cloudy | 38°3° (likely 34°1° to 41°5°) | 34°1° | 0% | 5 mph8 km/h from NE, gusts 7 mph12 km/h | 59% | 79% | 0 |
| Sun 6a | Cloudy | 38°3° (likely 34°1° to 41°5°) | 34°1° | 0% | 5 mph8 km/h from NE, gusts 8 mph12 km/h | 59% | 75% | 0 |
| Sun 7a | Cloudy | 38°3° (likely 34°1° to 41°5°) | 34°1° | 5% | 5 mph8 km/h from NE, gusts 9 mph14 km/h | 59% | 83% | 0 |
| Sun 8a | Cloudy | 37°3° (likely 35°2° to 42°6°) | 33°1° | 5% | 5 mph8 km/h from ENE, gusts 10 mph15 km/h | 61% | 83% | 0 |
| Sun 9a | Cloudy | 39°4° (likely 37°3° to 43°6°) | 35°2° | 10% | 6 mph10 km/h from ENE, gusts 9 mph15 km/h | 59% | 97% | 0 |
| Sun 10a | Cloudy | 44°7° (likely 42°6° to 45°7°) | 40°4° | 10% | 7 mph11 km/h from ENE, gusts 14 mph23 km/h | 49% | 100% | 0 |
| Sun 11a | Cloudy | 46°8° (likely 44°7° to 47°8°) | 42°6° | 20% | 7 mph11 km/h from ENE, gusts 14 mph22 km/h | 47% | 100% | 1 |
| Sun 12p | Rain | 47°8° (likely 44°7° to 48°9°) | 43°6° | 30% | 8 mph13 km/h from ENE, gusts 14 mph23 km/h | 45% | 100% | 1 |
| Sun 1p | Drizzle | 47°8° (likely 44°7° to 48°9°) | 43°6° | 50%, 0.06 in1.5 mm | 8 mph13 km/h from ENE, gusts 13 mph20 km/h | 47% | 100% | 1 |
| Sun 2p | Rain | 46°8° (likely 43°6° to 46°8°) | 41°5° | 50%, 0.06 in1.5 mm | 9 mph14 km/h from ENE, gusts 14 mph22 km/h | 49% | 100% | 0 |
| Sun 3p | Rain | 45°7° (likely 43°6° to 45°7°) | 40°4° | 60%, 0.06 in1.5 mm | 9 mph14 km/h from ENE, gusts 14 mph23 km/h | 51% | 100% | 0 |
| Sun 4p | Drizzle | 44°7° (likely 42°6° to 44°7°) | 39°4° | 60%, 0.06 in1.5 mm | 9 mph14 km/h from ENE, gusts 17 mph27 km/h | 55% | 100% | 0 |
| Sun 5p | Drizzle | 44°7° (likely 41°5° to 44°7°) | 39°4° | 60%, 0.06 in1.5 mm | 9 mph14 km/h from NE, gusts 16 mph25 km/h | 58% | 100% | 0 |
| Sun 6p | Rain | 43°6° (likely 40°4° to 43°6°) | 38°3° | 60%, 0.06 in1.5 mm | 9 mph14 km/h from NE, gusts 14 mph22 km/h | 60% | 100% | 0 |
| Sun 7p | Drizzle | 41°5° (likely 40°4° to 43°6°) | 35°2° | 60%, 0.05 in1.3 mm | 9 mph14 km/h from ENE, gusts 15 mph25 km/h | 70% | 100% | 0 |
| Sun 8p | Rain | 42°6° (likely 40°4° to 43°6°) | 36°2° | 60%, 0.05 in1.3 mm | 9 mph14 km/h from ENE, gusts 17 mph27 km/h | 67% | 100% | 0 |
| Sun 9p | Rain | 41°5° (likely 39°4° to 43°6°) | 35°2° | 80%, 0.05 in1.3 mm | 9 mph14 km/h from NE, gusts 14 mph23 km/h | 70% | 100% | 0 |
| Sun 10p | Drizzle | 41°5° (likely 39°4° to 43°6°) | 35°2° | 60%, 0.05 in1.3 mm | 9 mph14 km/h from NE, gusts 16 mph25 km/h | 70% | 100% | 0 |
| Sun 11p | Drizzle | 41°5° (likely 38°3° to 43°6°) | 35°2° | 60%, 0.05 in1.3 mm | 9 mph14 km/h from ENE, gusts 16 mph25 km/h | 70% | 100% | 0 |
| Mon 12a | Cloudy | 40°4° (likely 38°3° to 42°6°) | 34°1° | 60%, 0.05 in1.3 mm | 9 mph14 km/h from ENE, gusts 16 mph25 km/h | 76% | 100% | 0 |
| Mon 1a | Rain | 40°4° (likely 38°3° to 42°6°) | 33°1° | 80%, 0.14 in3.6 mm | 10 mph16 km/h from ENE, gusts 19 mph30 km/h | 76% | 100% | 0 |
| Mon 2a | Rain | 39°4° (likely 38°3° to 41°5°) | 32°0° | 60%, 0.14 in3.6 mm | 10 mph16 km/h from ENE, gusts 21 mph33 km/h | 79% | 100% | 0 |
| Mon 3a | Rain | 39°4° (likely 38°3° to 41°5°) | 32°0° | 50%, 0.14 in3.6 mm | 12 mph19 km/h from ENE, gusts 22 mph35 km/h | 79% | 100% | 0 |
| Mon 4a | Rain | 39°4° (likely 38°3° to 41°5°) | 31°−1° | 70%, 0.14 in3.6 mm | 13 mph21 km/h from ENE, gusts 22 mph36 km/h | 79% | 100% | 0 |
| Mon 5a | Rain | 38°3° (likely 38°3° to 40°4°) | 30°−1° | 80%, 0.14 in3.6 mm | 13 mph21 km/h from ENE, gusts 23 mph36 km/h | 82% | 100% | 0 |
| Mon 6a | Rain | 38°3° (likely 38°3° to 40°4°) | 30°−1° | 90%, 0.14 in3.6 mm | 14 mph23 km/h from ENE, gusts 23 mph36 km/h | 82% | 100% | 0 |
| Mon 7a | Rain | 37°3° (likely 37°3° to 40°4°) | 28°−2° | 90%, 0.36 in9.1 mm | 14 mph23 km/h from ENE, gusts 24 mph38 km/h | 85% | 100% | 0 |
| Mon 8a | Rain | 36°2° (likely 36°2° to 40°4°) | 27°−3° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 25 mph40 km/h | 89% | 100% | 0 |
| Mon 9a | Rain | 36°2° (likely 36°2° to 40°4°) | 27°−3° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 23 mph37 km/h | 89% | 100% | 0 |
| Mon 10a | Rain | 38°3° (likely 37°3° to 40°4°) | 29°−2° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 25 mph40 km/h | 85% | 100% | 0 |
| Mon 11a | Rain | 39°4° (likely 37°3° to 40°4°) | 30°−1° | 90%, 0.36 in9.1 mm | 16 mph26 km/h from ENE, gusts 28 mph45 km/h | 85% | 100% | 0 |
Afternoon
noon–6 PM
20% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: A slight chance of rain before 2pm. Partly sunny. High near 58, with temperatures falling to around 54 in the afternoon. North northwest wind 10 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tonight: Mostly cloudy. Low around 35, with temperatures rising to around 38 overnight. North northeast wind 3 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
60% chance · 0.3 in7.6 mm
Evening
6 PM–midnight
80% chance · 0.31 in7.9 mm
Overnight
midnight–6 AM
80% chance · 0.75 in19 mm
Official NWS forecast
Day: Rain likely after 11am. Cloudy. High near 48, with temperatures falling to around 44 in the afternoon. East northeast wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Night: Rain. Cloudy, with a low around 35. Northeast wind 9 to 13 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.
Morning
6 AM–noon
90% chance · 1.9 in49 mm
Afternoon
noon–6 PM
100% chance · 0.36 in9.1 mm
Evening
6 PM–midnight
100% chance · 0.27 in6.9 mm
Overnight
midnight–6 AM
100% chance · 0.12 in3 mm
Official NWS forecast
Day: Rain. Cloudy, with a high near 43. East northeast wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Night: Rain. Cloudy, with a low around 34. East wind 9 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.
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
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain likely. Mostly cloudy, with a high near 52. South southwest wind 7 to 10 mph. Chance of precipitation is 70%.
Night: A chance of rain before 1am. Mostly cloudy, with a low around 41. 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 59. West southwest wind around 12 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 60.
Night: Mostly cloudy, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 60°16°).
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
30% chance · 0.02 in0.4 mm
Overnight
midnight–6 AM
30% chance · 0.04 in1 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 63. Chance of precipitation is 20%.
Night: A chance of rain. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
30% chance · 0.01 in0.3 mm
Afternoon
noon–6 PM
30% chance · 0.07 in1.7 mm
Evening
6 PM–midnight
30% chance · 0.16 in4 mm
Overnight
midnight–6 AM
30% chance · 0.06 in1.6 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.
Morning
6 AM–noon
20% chance · 0.02 in0.5 mm
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
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 · 0.04 in1 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.
Dry, high 58°, low 35°.
63% chance of rain, high 48°, low 35°, cooling off.
98% chance of rain, high 43°, low 34°, cooling off.
Highs 52–63°; 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 11 AM · NWS gauge page
Reading from Sat 10:15 AM · NWS gauge page
Reading from Sat 11 AM · NWS gauge page
Reading from Sat 11 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 75% 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 7 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 39°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 6°3° warmer than typical.
On average 13°7° warmer than normal (daily mean temperature).
Florence weather by month: normals, records, snow and freeze dates
Sunrise 7:57 AM, sunset 6:29 PM.
Clouds most of the night (about 70% cover).
Waxing gibbous
97% lit · growing