S. Santiam River at Waterloo
8.8 mi- Level
- 3.2 ft
- Flow
- 1,170 cfs
Forecast peak 3.2 ft Mon 5 PM
Reading from Fri 11 PM · NWS gauge page
Appearance
Ends in 9 h 20 min
Issued for this forecast zone · National Weather Service Portland OR
What
Sub-freezing temperatures expected.
Impacts
Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Precautionary actions
To prevent water pipes from freezing; wrap or drain or allow them to drip slowly.
Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures.
Areas: North Oregon Coast Range Lowlands; North Oregon Coast Range; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills
See it on weather.gov (opens in a new tab)Model estimate for 12:00 AM PDT (no recent station report)
Freeze Warning. 39°4° and clear now.
Today: low 32°0° (likely 32°0° to 40°4°), high 61°16° (likely 57°14° to 65°18°).
Now 39°4°
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 12a | Clear | 39°4° (likely 37°3° to 43°6°) | 37°3° | 0% | 3 mph5 km/h from E, gusts 4 mph6 km/h | 100% | 12% | 0 |
| Sat 1a | Mostly clear | 38°3° (likely 36°2° to 43°6°) | 36°2° | 0% | 3 mph5 km/h from W, gusts 3 mph5 km/h | 99% | 23% | 0 |
| Sat 2a | Partly cloudy | 37°3° (likely 36°2° to 42°6°) | 37°3° | 0% | 2 mph3 km/h from W, gusts 3 mph4 km/h | 100% | 49% | 0 |
| Sat 3a | Partly cloudy | 36°2° (likely 35°2° to 41°5°) | 36°2° | 0% | 2 mph3 km/h from SE, gusts 4 mph6 km/h | 99% | 57% | 0 |
| Sat 4a | Partly cloudy | 35°2° (likely 35°2° to 41°5°) | 35°2° | 0% | 2 mph3 km/h from ESE, gusts 5 mph7 km/h | 99% | 68% | 0 |
| Sat 5a | Partly cloudy | 35°2° (likely 34°1° to 41°5°) | 35°2° | 0% | 2 mph3 km/h from ESE, gusts 3 mph5 km/h | 98% | 70% | 0 |
| Sat 6a | Cloudy | 34°1° (likely 33°1° to 41°5°) | 34°1° | 0% | 2 mph3 km/h from ESE, gusts 3 mph5 km/h | 99% | 73% | 0 |
| Sat 7a | Fog | 33°1° (likely 33°1° to 40°4°) | 33°1° | 0% | 1 mph2 km/h from ESE, gusts 4 mph7 km/h | 96% | 73% | 0 |
| Sat 8a | Cloudy | 34°1° (likely 33°1° to 40°4°) | 34°1° | 0% | 1 mph2 km/h from SSE, gusts 3 mph4 km/h | 94% | 69% | 0 |
| Sat 9a | Cloudy | 37°3° (likely 37°3° to 41°5°) | 37°3° | 0% | 1 mph2 km/h from SE, gusts 3 mph6 km/h | 85% | 60% | 0 |
| Sat 10a | Cloudy | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 74% | 79% | 1 |
| Sat 11a | Cloudy | 51°11° (likely 50°10° to 54°12°) | 51°11° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 61% | 79% | 2 |
| Sat 12p | Cloudy | 55°13° (likely 53°12° to 58°14°) | 55°13° | 0% | 1 mph2 km/h from WNW, gusts 5 mph7 km/h | 56% | 80% | 3 |
| Sat 1p | Cloudy | 58°14° (likely 55°13° to 62°17°) | 58°14° | 0% | 2 mph3 km/h from NW, gusts 6 mph9 km/h | 53% | 81% | 4 |
| Sat 2p | Cloudy | 59°15° (likely 57°14° to 64°18°) | 59°15° | 0% | 3 mph5 km/h from NW, gusts 6 mph10 km/h | 50% | 65% | 3 |
| Sat 3p | Cloudy | 60°16° (likely 57°14° to 65°18°) | 60°16° | 0% | 3 mph5 km/h from NW, gusts 7 mph11 km/h | 50% | 79% | 3 |
| Sat 4p | Cloudy | 61°16° (likely 57°14° to 64°18°) | 61°16° | 0% | 2 mph3 km/h from WNW, gusts 7 mph11 km/h | 50% | 77% | 2 |
| Sat 5p | Cloudy | 59°15° (likely 56°13° to 64°18°) | 59°15° | 0% | 2 mph3 km/h from WNW, gusts 5 mph8 km/h | 55% | 77% | 1 |
| Sat 6p | Cloudy | 56°13° (likely 53°12° to 59°15°) | 56°13° | 0% | 0 mph0 km/h, gusts 5 mph9 km/h | 60% | 78% | 0 |
| Sat 7p | Cloudy | 53°12° (likely 49°9° to 55°13°) | 53°12° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 69% | 79% | 0 |
| Sat 8p | Cloudy | 48°9° (likely 48°9° to 53°12°) | 48°9° | 0% | 1 mph2 km/h from ESE, gusts 2 mph4 km/h | 80% | 63% | 0 |
| Sat 9p | Cloudy | 46°8° (likely 44°7° to 51°11°) | 46°8° | 0% | 1 mph2 km/h from ESE, gusts 5 mph8 km/h | 84% | 63% | 0 |
| Sat 10p | Cloudy | 45°7° (likely 42°6° to 50°10°) | 45°7° | 0% | 2 mph3 km/h from SE, gusts 4 mph6 km/h | 84% | 80% | 0 |
| Sat 11p | Cloudy | 45°7° (likely 42°6° to 49°9°) | 45°7° | 0% | 2 mph3 km/h from S, gusts 4 mph6 km/h | 85% | 82% | 0 |
| Sun 12a | Cloudy | 43°6° (likely 42°6° to 48°9°) | 41°5° | 0% | 3 mph5 km/h from SSE, gusts 4 mph6 km/h | 84% | 82% | 0 |
| Sun 1a | Cloudy | 43°6° (likely 42°6° to 46°8°) | 41°5° | 0% | 3 mph5 km/h from SSE, gusts 4 mph7 km/h | 80% | 80% | 0 |
| Sun 2a | Cloudy | 43°6° (likely 42°6° to 46°8°) | 41°5° | 0% | 3 mph5 km/h from SE, gusts 5 mph7 km/h | 79% | 81% | 0 |
| Sun 3a | Cloudy | 41°5° (likely 41°5° to 46°8°) | 39°4° | 0% | 3 mph5 km/h from SE, gusts 4 mph6 km/h | 78% | 78% | 0 |
| Sun 4a | Cloudy | 40°4° (likely 40°4° to 46°8°) | 38°3° | 0% | 3 mph5 km/h from ESE, gusts 3 mph5 km/h | 80% | 74% | 0 |
| Sun 5a | Cloudy | 40°4° (likely 40°4° to 46°8°) | 38°3° | 5% | 3 mph5 km/h from SE, gusts 4 mph6 km/h | 79% | 72% | 0 |
| Sun 6a | Cloudy | 38°3° (likely 38°3° to 45°7°) | 36°2° | 5% | 3 mph5 km/h from SE, gusts 4 mph7 km/h | 80% | 70% | 0 |
| Sun 7a | Cloudy | 40°4° (likely 40°4° to 45°7°) | 38°3° | 0% | 3 mph5 km/h from SE, gusts 4 mph7 km/h | 79% | 69% | 0 |
| Sun 8a | Cloudy | 39°4° (likely 39°4° to 45°7°) | 36°2° | 0% | 5 mph8 km/h from SSE, gusts 5 mph8 km/h | 80% | 70% | 0 |
| Sun 9a | Cloudy | 43°6° (likely 43°6° to 49°9°) | 40°4° | 0% | 5 mph8 km/h from SSE, gusts 7 mph11 km/h | 77% | 68% | 0 |
| Sun 10a | Cloudy | 49°9° (likely 49°9° to 57°14°) | 47°8° | 5% | 5 mph8 km/h from SSE, gusts 10 mph17 km/h | 70% | 75% | 1 |
| Sun 11a | Cloudy | 54°12° (likely 54°12° to 61°16°) | 54°12° | 0%, 0.18 in4.6 mm | 5 mph8 km/h from S, gusts 14 mph22 km/h | 62% | 72% | 2 |
| Sun 12p | Cloudy | 58°14° (likely 58°14° to 62°17°) | 58°14° | 5%, 0.18 in4.6 mm | 5 mph8 km/h from S, gusts 15 mph25 km/h | 59% | 77% | 3 |
| Sun 1p | Rain | 59°15° (likely 58°14° to 64°18°) | 59°15° | 20%, 0.18 in4.6 mm | 5 mph8 km/h from S, gusts 22 mph35 km/h | 57% | 81% | 3 |
| Sun 2p | Rain | 61°16° (likely 56°13° to 65°18°) | 61°16° | 30%, 0.18 in4.6 mm | 5 mph8 km/h from SW, gusts 20 mph32 km/h | 58% | 60% | 3 |
| Sun 3p | Rain | 62°17° (likely 55°13° to 65°18°) | 62°17° | 60%, 0.18 in4.6 mm | 5 mph8 km/h from SW, gusts 15 mph25 km/h | 60% | 100% | 2 |
| Sun 4p | Rain | 60°16° (likely 54°12° to 63°17°) | 60°16° | 60%, 0.18 in4.6 mm | 5 mph8 km/h from SW, gusts 11 mph18 km/h | 63% | 75% | 2 |
| Sun 5p | Rain | 58°14° (likely 53°12° to 59°15°) | 58°14° | 70%, 0.17 in4.3 mm | 3 mph5 km/h from SSE, gusts 11 mph18 km/h | 70% | 76% | 1 |
| Sun 6p | Rain | 57°14° (likely 51°11° to 57°14°) | 57°14° | 70%, 0.17 in4.3 mm | 3 mph5 km/h from SSE, gusts 14 mph22 km/h | 73% | 96% | 0 |
| Sun 7p | Rain | 54°12° (likely 51°11° to 54°12°) | 54°12° | 70%, 0.17 in4.3 mm | 3 mph5 km/h from SSE, gusts 10 mph17 km/h | 81% | 87% | 0 |
| Sun 8p | Rain | 51°11° (likely 49°9° to 52°11°) | 51°11° | 70%, 0.17 in4.3 mm | 5 mph8 km/h from S, gusts 8 mph12 km/h | 90% | 82% | 0 |
| Sun 9p | Rain | 50°10° (likely 48°9° to 51°11°) | 48°9° | 70%, 0.17 in4.3 mm | 5 mph8 km/h from S, gusts 7 mph11 km/h | 94% | 75% | 0 |
| Sun 10p | Rain | 49°9° (likely 48°9° to 51°11°) | 47°8° | 70%, 0.17 in4.3 mm | 5 mph8 km/h from S, gusts 7 mph11 km/h | 96% | 74% | 0 |
| Sun 11p | Rain | 48°9° (likely 47°8° to 50°10°) | 45°7° | 80%, 0.09 in2.3 mm | 7 mph11 km/h from S, gusts 6 mph10 km/h | 97% | 49% | 0 |
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Areas of frost before 7am, then widespread frost and patchy fog between 7am and 10am. Mostly sunny. High near 61, with temperatures falling to around 59 in the afternoon. East northeast wind 0 to 3 mph.
Tonight: Areas of frost after 2am. Mostly clear. Low around 32, with temperatures rising to around 35 overnight. Southeast wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
70% chance · 1.1 in27 mm
Evening
6 PM–midnight
80% chance · 0.94 in24 mm
Overnight
midnight–6 AM
80% chance · 0.14 in3.5 mm
Official NWS forecast
Day: Rain likely after 1pm. Mostly cloudy, with a high near 63. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Night: Rain. Cloudy, with a low around 41. South southeast wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
80% chance · 0.16 in4 mm
Afternoon
noon–6 PM
90% chance · 0.16 in4.1 mm
Evening
6 PM–midnight
80% chance · 0.08 in1.9 mm
Overnight
midnight–6 AM
60% chance · 0.07 in1.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain. Mostly cloudy, with a high near 56. Chance of precipitation is 80%.
Night: Rain likely. Mostly cloudy, with a low around 39.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
40% chance · 0.07 in1.8 mm
Afternoon
noon–6 PM
40% chance · 0.12 in3 mm
Evening
6 PM–midnight
40% chance · 0.08 in1.9 mm
Overnight
midnight–6 AM
40% chance · 0.02 in0.5 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 11am, then a chance of rain and patchy fog. Mostly cloudy, with a high near 58.
Night: A chance of rain. Mostly cloudy, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance · 0.03 in0.8 mm
Afternoon
noon–6 PM
60% chance · 0.06 in1.4 mm
Evening
6 PM–midnight
60% chance · 0.05 in1.3 mm
Overnight
midnight–6 AM
60% chance · 0.05 in1.2 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 58.
Night: A chance of rain. Mostly cloudy, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance · 0.19 in5 mm
Afternoon
noon–6 PM
40% chance · 0.06 in1.4 mm
Evening
6 PM–midnight
30% chance · 0.06 in1.6 mm
Overnight
midnight–6 AM
20% chance · 0.06 in1.4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 56.
Night: A slight chance of rain. Mostly cloudy, with a low around 35.
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
Dry
Overnight
midnight–6 AM
20% chance · 0.03 in0.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain before 5pm. Partly sunny, with a high near 58.
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
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
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
20% chance
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
Afternoon
noon–6 PM
20% chance · 0.02 in0.6 mm
Evening
6 PM–midnight
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.
Dry, high 61°, low 32°.
73% chance of rain, high 63°, low 41°.
83% chance of rain, high 56°, low 39°, cooling off.
Highs 52–58°; chance of precipitation on Wednesday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PQR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 3.2 ft Mon 5 PM
Reading from Fri 11 PM · NWS gauge page
Forecast peak 3.9 ft Thu 5 AM
Reading from Fri 10:45 PM · NWS gauge page
Forecast peak 0.9 ft Mon 11 PM
Reading from Fri 11 PM · NWS gauge page
Forecast peak 1.8 ft Mon 11 PM
Reading from Fri 10:45 PM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 68% 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 12 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 39°F).
Today, 3:00 PM–4:00 PM
Good stretch to open the windows.
Today’s expected high is about typical for the date.
On average 1° warmer than normal (daily mean temperature).
Sweet Home weather by month: normals, records, snow and freeze dates
Sunrise 7:37 AM, sunset 6:11 PM.
Mostly clear 12:40–2 AM, but the moon is 96% lit and up.
Waxing gibbous
96% lit · growing