Big Sioux River near Lake Alvin
8.3 mi- Level
- 1253 ft
Reading from Sat 6 AM · NWS gauge page
Appearance
Observed 6:55 AM CDT at KLYV
Clear and 59°15°, 10°6° warmer than a typical Oct 24, rain ~8–9 AM (47%).
Today: low 44°7° (likely 44°7° to 50°10°), high 67°19° (likely 65°18° to 67°19°).
Now 59°15°
Clear
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 7a | Showers | 61°16° (likely 60°16° to 62°17°) | 61°16° | 50%, 0.01 in0.3 mm | 10 mph16 km/h from S, gusts 19 mph31 km/h | 63% | 76% | 0 |
| Sat 8a | Mostly sunny | 61°16° (likely 60°16° to 61°16°) | 61°16° | 50%, 0.01 in0.3 mm | 10 mph16 km/h from S, gusts 18 mph29 km/h | 65% | 44% | 0 |
| Sat 9a | Cloudy | 62°17° (likely 60°16° to 63°17°) | 62°17° | 40%, 0.01 in0.3 mm | 15 mph24 km/h from SSW, gusts 20 mph31 km/h | 65% | 91% | 0 |
| Sat 10a | Cloudy | 63°17° (likely 63°17° to 65°18°) | 63°17° | 40%, 0.01 in0.3 mm | 10 mph16 km/h from SSW, gusts 22 mph35 km/h | 64% | 84% | 1 |
| Sat 11a | Cloudy | 65°18° (likely 64°18° to 65°18°) | 65°18° | 40%, 0.01 in0.3 mm | 15 mph24 km/h from W, gusts 15 mph24 km/h | 68% | 96% | 1 |
| Sat 12p | Cloudy | 63°17° (likely 60°16° to 63°17°) | 63°17° | 40%, 0.01 in0.3 mm | 15 mph24 km/h from NW, gusts 22 mph35 km/h | 69% | 99% | 2 |
| Sat 1p | Showers | 62°17° (likely 56°13° to 62°17°) | 62°17° | 30%, 0.07 in1.8 mm | 15 mph24 km/h from NW, gusts 25 mph40 km/h | 64% | 100% | 3 |
| Sat 2p | Showers | 59°15° (likely 55°13° to 59°15°) | 59°15° | 40%, 0.07 in1.8 mm | 15 mph24 km/h from NNW, gusts 23 mph37 km/h | 67% | 100% | 3 |
| Sat 3p | Showers | 58°14° (likely 54°12° to 58°14°) | 58°14° | 50%, 0.07 in1.8 mm | 15 mph24 km/h from NW, gusts 19 mph31 km/h | 66% | 99% | 2 |
| Sat 4p | Showers | 57°14° (likely 53°12° to 57°14°) | 57°14° | 50%, 0.07 in1.8 mm | 15 mph24 km/h from NNW, gusts 19 mph31 km/h | 67% | 100% | 0 |
| Sat 5p | Showers | 55°13° (likely 51°11° to 55°13°) | 55°13° | 40%, 0.07 in1.8 mm | 10 mph16 km/h from NNW, gusts 18 mph29 km/h | 69% | 98% | 0 |
| Sat 6p | Showers | 54°12° (likely 50°10° to 54°12°) | 54°12° | 40%, 0.07 in1.8 mm | 10 mph16 km/h from NNW, gusts 17 mph27 km/h | 70% | 100% | 0 |
| Sat 7p | Showers | 52°11° (likely 49°9° to 52°11°) | 52°11° | 50%, 0.02 in0.5 mm | 10 mph16 km/h from NNW, gusts 18 mph29 km/h | 76% | 100% | 0 |
| Sat 8p | Showers | 51°11° (likely 48°9° to 51°11°) | 51°11° | 50%, 0.02 in0.5 mm | 5 mph8 km/h from NNW, gusts 15 mph24 km/h | 79% | 99% | 0 |
| Sat 9p | Drizzle | 51°11° (likely 48°9° to 51°11°) | 51°11° | 50%, 0.02 in0.5 mm | 5 mph8 km/h from NNW, gusts 13 mph21 km/h | 78% | 100% | 0 |
| Sat 10p | Drizzle | 51°11° (likely 48°9° to 51°11°) | 51°11° | 40%, 0.02 in0.5 mm | 5 mph8 km/h from N, gusts 12 mph19 km/h | 80% | 100% | 0 |
| Sat 11p | Drizzle | 50°10° (likely 48°9° to 51°11°) | 48°9° | 40%, 0.02 in0.5 mm | 5 mph8 km/h from N, gusts 12 mph20 km/h | 77% | 100% | 0 |
| Sun 12a | Drizzle | 50°10° (likely 47°8° to 51°11°) | 48°9° | 30%, 0.02 in0.5 mm | 5 mph8 km/h from N, gusts 12 mph19 km/h | 74% | 100% | 0 |
| Sun 1a | Showers | 49°9° (likely 47°8° to 51°11°) | 47°8° | 30%, 0.01 in0.3 mm | 5 mph8 km/h from NNE, gusts 9 mph15 km/h | 77% | 90% | 0 |
| Sun 2a | Showers | 48°9° (likely 47°8° to 50°10°) | 46°8° | 20%, 0.01 in0.3 mm | 5 mph8 km/h from NNE, gusts 13 mph20 km/h | 80% | 99% | 0 |
| Sun 3a | Showers | 48°9° (likely 47°8° to 50°10°) | 45°7° | 20%, 0.01 in0.3 mm | 5 mph8 km/h from NNE, gusts 17 mph27 km/h | 77% | 100% | 0 |
| Sun 4a | Cloudy | 48°9° (likely 46°8° to 49°9°) | 45°7° | 30%, 0.01 in0.3 mm | 5 mph8 km/h from NE, gusts 19 mph31 km/h | 74% | 99% | 0 |
| Sun 5a | Showers | 46°8° (likely 46°8° to 48°9°) | 42°6° | 30%, 0.01 in0.3 mm | 5 mph8 km/h from NE, gusts 18 mph29 km/h | 79% | 100% | 0 |
| Sun 6a | Cloudy | 46°8° (likely 45°7° to 48°9°) | 42°6° | 40%, 0.01 in0.3 mm | 5 mph8 km/h from NE, gusts 17 mph27 km/h | 76% | 100% | 0 |
| Sun 7a | Drizzle | 46°8° (likely 44°7° to 47°8°) | 42°6° | 40% | 10 mph16 km/h from NE, gusts 18 mph29 km/h | 71% | 99% | 0 |
| Sun 8a | Cloudy | 44°7° (likely 44°7° to 47°8°) | 39°4° | 30% | 10 mph16 km/h from NE, gusts 19 mph30 km/h | 79% | 100% | 0 |
| Sun 9a | Showers | 45°7° (likely 44°7° to 47°8°) | 41°5° | 30% | 10 mph16 km/h from NE, gusts 20 mph33 km/h | 79% | 100% | 0 |
| Sun 10a | Showers | 48°9° (likely 45°7° to 48°9°) | 44°7° | 20% | 10 mph16 km/h from NE, gusts 19 mph30 km/h | 77% | 100% | 0 |
| Sun 11a | Cloudy | 49°9° (likely 44°7° to 49°9°) | 45°7° | 20% | 10 mph16 km/h from NE, gusts 18 mph29 km/h | 74% | 98% | 1 |
| Sun 12p | Cloudy | 51°11° (likely 44°7° to 51°11°) | 51°11° | 20% | 10 mph16 km/h from NE, gusts 19 mph31 km/h | 68% | 94% | 1 |
| Sun 1p | Cloudy | 51°11° (likely 44°7° to 53°12°) | 51°11° | 20% | 10 mph16 km/h from NE, gusts 21 mph34 km/h | 68% | 97% | 3 |
| Sun 2p | Cloudy | 53°12° (likely 45°7° to 54°12°) | 53°12° | 20% | 10 mph16 km/h from NE, gusts 21 mph34 km/h | 64% | 97% | 4 |
| Sun 3p | Cloudy | 53°12° (likely 44°7° to 55°13°) | 53°12° | 20% | 10 mph16 km/h from NE, gusts 22 mph35 km/h | 61% | 98% | 2 |
| Sun 4p | Cloudy | 53°12° (likely 44°7° to 55°13°) | 53°12° | 20% | 10 mph16 km/h from NE, gusts 22 mph36 km/h | 61% | 85% | 1 |
| Sun 5p | Cloudy | 53°12° (likely 43°6° to 53°12°) | 53°12° | 20% | 10 mph16 km/h from NE, gusts 23 mph37 km/h | 59% | 86% | 1 |
| Sun 6p | Cloudy | 52°11° (likely 43°6° to 52°11°) | 52°11° | 30% | 10 mph16 km/h from NE, gusts 25 mph40 km/h | 59% | 92% | 0 |
| Sun 7p | Cloudy | 49°9° (likely 42°6° to 50°10°) | 45°7° | 70%, 0.09 in2.3 mm | 10 mph16 km/h from NE, gusts 24 mph39 km/h | 63% | 86% | 0 |
| Sun 8p | Cloudy | 48°9° (likely 42°6° to 48°9°) | 43°6° | 70%, 0.09 in2.3 mm | 10 mph16 km/h from NE, gusts 23 mph38 km/h | 65% | 87% | 0 |
| Sun 9p | Cloudy | 47°8° (likely 42°6° to 47°8°) | 42°6° | 70%, 0.09 in2.3 mm | 10 mph16 km/h from NE, gusts 25 mph40 km/h | 68% | 93% | 0 |
| Sun 10p | Cloudy | 46°8° (likely 42°6° to 46°8°) | 41°5° | 70%, 0.09 in2.3 mm | 10 mph16 km/h from NE, gusts 25 mph40 km/h | 71% | 94% | 0 |
| Sun 11p | Cloudy | 45°7° (likely 43°6° to 45°7°) | 39°4° | 70%, 0.09 in2.3 mm | 10 mph16 km/h from NE, gusts 23 mph38 km/h | 73% | 96% | 0 |
| Mon 12a | Cloudy | 45°7° (likely 42°6° to 45°7°) | 39°4° | 70%, 0.09 in2.3 mm | 10 mph16 km/h from ENE, gusts 24 mph38 km/h | 76% | 100% | 0 |
| Mon 1a | Showers | 44°7° (likely 42°6° to 44°7°) | 38°3° | 90%, 0.36 in9.1 mm | 10 mph16 km/h from ENE, gusts 25 mph40 km/h | 79% | 100% | 0 |
| Mon 2a | Showers | 43°6° (likely 42°6° to 44°7°) | 37°3° | 90%, 0.36 in9.1 mm | 10 mph16 km/h from ENE, gusts 25 mph40 km/h | 82% | 100% | 0 |
| Mon 3a | Drizzle | 43°6° (likely 42°6° to 44°7°) | 36°2° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 25 mph41 km/h | 86% | 100% | 0 |
| Mon 4a | Drizzle | 42°6° (likely 42°6° to 44°7°) | 35°2° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 25 mph41 km/h | 89% | 100% | 0 |
| Mon 5a | Showers | 41°5° (likely 41°5° to 44°7°) | 34°1° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 25 mph41 km/h | 93% | 100% | 0 |
| Mon 6a | Showers | 40°4° (likely 40°4° to 44°7°) | 32°0° | 90%, 0.36 in9.1 mm | 15 mph24 km/h from ENE, gusts 25 mph40 km/h | 96% | 100% | 0 |
Morning
6 AM–noon
50% chance · 0.05 in1.3 mm
Afternoon
noon–6 PM
50% chance · 0.36 in9.1 mm
Evening
6 PM–midnight
50% chance · 0.17 in4.3 mm
Overnight
midnight–6 AM
30% chance · 0.07 in1.8 mm
Official NWS forecast
Today: Scattered rain showers before 8am, then scattered showers and thunderstorms. Mostly cloudy. High near 67, with temperatures falling to around 55 in the afternoon. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Tonight: A chance of rain showers. Cloudy, with a low around 44. North northeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
40% chance · 0.01 in0.3 mm
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
70% chance · 0.45 in11 mm
Overnight
midnight–6 AM
90% chance · 1.9 in48 mm
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy, with a high near 54. Northeast wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Night: Rain showers. Cloudy, with a low around 39. Northeast wind 10 to 15 mph. Chance of precipitation is 90%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
90% chance · 0.62 in16 mm
Afternoon
noon–6 PM
70% chance · 0.1 in2.5 mm
Evening
6 PM–midnight
70% chance · 0.13 in3.3 mm
Overnight
midnight–6 AM
70% chance · 0.05 in1.2 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain showers. Cloudy, with a high near 52. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Night: Rain showers. Cloudy, with a low around 42. East southeast wind 10 to 15 mph. Chance of precipitation is 80%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
30% chance
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
40% chance · 0.06 in1.6 mm
Overnight
midnight–6 AM
40% chance · 0.03 in0.6 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain showers likely before 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Night: A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
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: A chance of rain showers. Mostly sunny, with a high near 62. Chance of precipitation is 50%.
Night: A slight chance of rain showers before 1am. Mostly clear, 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: A slight chance of rain showers after 1am. Partly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
20% chance · 0.02 in0.5 mm
Evening
6 PM–midnight
30% chance · 0.18 in4.5 mm
Overnight
midnight–6 AM
40% chance · 0.07 in1.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 62. Chance of precipitation is 30%.
Night: A chance of rain showers. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
40% chance · 0.02 in0.6 mm
Afternoon
noon–6 PM
50% chance · 0.04 in1.1 mm
Evening
6 PM–midnight
50% chance · 0.12 in3.1 mm
Overnight
midnight–6 AM
40% chance · 0.23 in5.9 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
30% chance · 0.03 in0.8 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
20% chance · 0.03 in0.8 mm
Afternoon
noon–6 PM
30% chance · 0.08 in1.9 mm
Evening
6 PM–midnight
30% chance · 0.05 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.
48% chance of rain, high 67°, low 44°.
43% chance of rain, high 54°, low 39°, cooling off.
93% chance of rain, high 52°, low 42°.
Highs 56–64°; chance of precipitation on Tuesday, Wednesday, Saturday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (FSD) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Reading from Sat 6 AM · NWS gauge page
Reading from Sat 6 AM · NWS gauge page
Reading from Sat 5:45 AM · NWS gauge page
Reading from Sat 6 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 82% 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 3 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 46°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 10°6° warmer than typical.
On average 8°5° warmer than normal (daily mean temperature).
Larchwood weather by month: normals, records, snow and freeze dates
Sunrise 7:51 AM, sunset 6:28 PM.
Clouds most of the night (about 99% cover).
Waxing gibbous
96% lit · growing