S. Santiam River at Waterloo
0.2 mi- Level
- 3.2 ft
- Flow
- 1,180 cfs
Forecast peak 3.2 ft Mon 5 PM
Reading from Sat 6:15 AM · NWS gauge page
1 active weather alert
Freeze Warning
Ends in 2 h 33 min
- When
- Until 10 AM PDT Saturday.
- Where
- East Central Willamette Valley, North Oregon Coast Range, North Oregon Coast Range Lowlands, West Central Willamette Valley, Benton County Lowlands, Cascade Foothills of Marion and Linn Counties, Lane County Cascade Foothills, Lane County Lowlands, and Linn County Lowlands.
Issued for this forecast zone · National Weather Service Portland OR
What, impacts and precautionsHide details
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 7:00 AM PDT (no recent station report)
Waterloo, OR weather
Freeze Warning. 33°1° and foggy now.
Today: low 37°3° (likely 33°1° to 37°3°), high 60°16° (likely 56°13° to 60°16°).
Now 33°1°
Fog
- Wind
- Calm
- Light through 7 PM
- Dew point
- 33°1°
- Dry · up to 41°5° by 6 PM (comfortable)
- Humidity
- 100%
- Air 33°1°, dew point 33°1° · frost likely
- Air quality
- 6Good
- Main pollutant: PM2.5 (fine particles)
Next 48 hours
Good hours for
This morningUp to 48°9° by 11 AM
This afternoonUp to 60°16° by 4 PM
TonightDown to 39°4° by 4 AM
Tomorrow morningUp to 54°12° by 11 AM
Tomorrow afternoonUp to 62°17° by 4 PM · Rain 1–6 PM (70%)
Tomorrow nightDown to 44°7° by 5 AM · Rain all night (80%)
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 7a | Fog | 33°1° (likely 33°1° to 33°1°) | 33°1° | 0% | 0 mph0 km/h | 100% | — | — |
| Sat 8a | Fog | 33°1° (likely 33°1° to 34°1°) | 33°1° | 0% | 0 mph0 km/h | 100% | — | — |
| Sat 9a | Mostly cloudy | 37°3° (likely 37°3° to 38°3°) | 37°3° | 0% | 0 mph0 km/h | 94% | — | — |
| Sat 10a | Partly sunny | 44°7° (likely 43°6° to 44°7°) | 44°7° | 0% | 0 mph0 km/h | 83% | — | — |
| Sat 11a | Partly sunny | 48°9° (likely 46°8° to 48°9°) | 48°9° | 0% | 1 mph2 km/h from NW | 70% | — | — |
| Sat 12p | Partly sunny | 52°11° (likely 50°10° to 52°11°) | 52°11° | 0% | 2 mph3 km/h from NW | 62% | — | — |
| Sat 1p | Partly sunny | 56°13° (likely 53°12° to 56°13°) | 56°13° | 0% | 2 mph3 km/h from NW | 55% | — | — |
| Sat 2p | Mostly cloudy | 58°14° (likely 55°13° to 58°14°) | 58°14° | 0% | 2 mph3 km/h from NW | 52% | — | — |
| Sat 3p | Partly sunny | 59°15° (likely 56°13° to 59°15°) | 59°15° | 0% | 2 mph3 km/h from NW | 50% | — | — |
| Sat 4p | Mostly sunny | 60°16° (likely 56°13° to 60°16°) | 60°16° | 0% | 2 mph3 km/h from NNW | 48% | — | — |
| Sat 5p | Mostly sunny | 58°14° (likely 54°12° to 58°14°) | 58°14° | 0% | 1 mph2 km/h from NNW | 51% | — | — |
| Sat 6p | Partly cloudy | 56°13° (likely 51°11° to 56°13°) | 56°13° | 0% | 0 mph0 km/h | 57% | — | — |
| Sat 7p | Mostly cloudy | 53°12° (likely 48°9° to 53°12°) | 53°12° | 0% | 1 mph2 km/h from NE | 66% | — | — |
| Sat 8p | Mostly cloudy | 48°9° (likely 47°8° to 48°9°) | 48°9° | 0% | 1 mph2 km/h from SSE | 76% | — | — |
| Sat 9p | Mostly cloudy | 46°8° (likely 46°8° to 46°8°) | 46°8° | 0% | 1 mph2 km/h from SSE | 81% | — | — |
| Sat 10p | Mostly cloudy | 45°7° (likely 45°7° to 45°7°) | 45°7° | 0% | 2 mph3 km/h from S | 84% | — | — |
| Sat 11p | Mostly cloudy | 44°7° (likely 44°7° to 45°7°) | 44°7° | 0% | 2 mph3 km/h from S | 86% | — | — |
| Sun 12a | Cloudy | 43°6° (likely 43°6° to 45°7°) | 41°5° | 0% | 3 mph5 km/h from S | 88% | — | — |
| Sun 1a | Mostly cloudy | 42°6° (likely 42°6° to 44°7°) | 40°4° | 0% | 3 mph5 km/h from SSE | 88% | — | — |
| Sun 2a | Mostly cloudy | 41°5° (likely 41°5° to 44°7°) | 39°4° | 0% | 3 mph5 km/h from SSE | 86% | — | — |
| Sun 3a | Mostly cloudy | 40°4° (likely 40°4° to 44°7°) | 37°3° | 0% | 5 mph8 km/h from SSE | 84% | — | — |
| Sun 4a | Mostly cloudy | 39°4° (likely 39°4° to 44°7°) | 36°2° | 0% | 5 mph8 km/h from SSE | 83% | — | — |
| Sun 5a | Mostly cloudy | 39°4° (likely 39°4° to 43°6°) | 36°2° | 5% | 5 mph8 km/h from SSE | 81% | — | — |
| Sun 6a | Mostly cloudy | 38°3° (likely 38°3° to 43°6°) | 34°1° | 5% | 5 mph8 km/h from SSE | 81% | — | — |
| Sun 7a | Mostly cloudy | 39°4° (likely 39°4° to 44°7°) | 36°2° | 0% | 5 mph8 km/h from SSE | 81% | — | — |
| Sun 8a | Partly sunny | 40°4° (likely 40°4° to 45°7°) | 36°2° | 0% | 6 mph10 km/h from SSE | 81% | — | — |
| Sun 9a | Partly sunny | 44°7° (likely 44°7° to 49°9°) | 41°5° | 0% | 6 mph10 km/h from SSE | 78% | — | — |
| Sun 10a | Partly sunny | 50°10° (likely 50°10° to 52°11°) | 48°9° | 10% | 6 mph10 km/h from SSE | 72% | — | — |
| Sun 11a | Mostly cloudy | 54°12° (likely 53°12° to 54°12°) | 54°12° | 5%, 0.19 in4.8 mm | 6 mph10 km/h from S | 63% | — | — |
| Sun 12p | Mostly cloudy | 57°14° (likely 53°12° to 57°14°) | 57°14° | 10%, 0.19 in4.8 mm | 6 mph10 km/h from S | 60% | — | — |
| Sun 1p | Rain | 60°16° (likely 52°11° to 60°16°) | 60°16° | 30%, 0.19 in4.8 mm | 6 mph10 km/h from S | 58% | — | — |
| Sun 2p | Rain | 61°16° (likely 52°11° to 61°16°) | 61°16° | 50%, 0.19 in4.8 mm | 6 mph10 km/h from SSW | 58% | — | — |
| Sun 3p | Rain | 61°16° (likely 52°11° to 61°16°) | 61°16° | 70%, 0.19 in4.8 mm | 6 mph10 km/h from SSW | 60% | — | — |
| Sun 4p | Rain | 62°17° (likely 51°11° to 62°17°) | 62°17° | 60%, 0.19 in4.8 mm | 6 mph10 km/h from SSW | 62% | — | — |
| Sun 5p | Rain | 59°15° (likely 51°11° to 59°15°) | 59°15° | 70%, 0.1 in2.5 mm | 5 mph8 km/h from S | 68% | — | — |
| Sun 6p | Rain | 58°14° (likely 50°10° to 58°14°) | 58°14° | 70%, 0.1 in2.5 mm | 5 mph8 km/h from S | 71% | — | — |
| Sun 7p | Rain | 55°13° (likely 50°10° to 55°13°) | 55°13° | 70%, 0.1 in2.5 mm | 5 mph8 km/h from S | 79% | — | — |
| Sun 8p | Rain | 51°11° (likely 50°10° to 51°11°) | 51°11° | 70%, 0.1 in2.5 mm | 6 mph10 km/h from S | 88% | — | — |
| Sun 9p | Rain | 50°10° (likely 50°10° to 50°10°) | 48°9° | 70%, 0.1 in2.5 mm | 6 mph10 km/h from S | 93% | — | — |
| Sun 10p | Rain | 49°9° (likely 49°9° to 49°9°) | 47°8° | 70%, 0.1 in2.5 mm | 6 mph10 km/h from S | 95% | — | — |
| Sun 11p | Rain | 48°9° (likely 48°9° to 49°9°) | 43°6° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S | 96% | — | — |
| Mon 12a | Rain | 47°8° (likely 47°8° to 47°8°) | 42°6° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S | 97% | — | — |
| Mon 1a | Rain | 47°8° (likely 47°8° to 47°8°) | 42°6° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S | 97% | — | — |
| Mon 2a | Rain | 46°8° (likely 46°8° to 46°8°) | 41°5° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S | 97% | — | — |
| Mon 3a | Rain | 45°7° (likely 45°7° to 45°7°) | 40°4° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S | 97% | — | — |
| Mon 4a | Rain | 45°7° (likely 45°7° to 45°7°) | 40°4° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S | 98% | — | — |
| Mon 5a | Rain | 44°7° (likely 44°7° to 44°7°) | 39°4° | 80%, 0.04 in1 mm | 8 mph13 km/h from S | 98% | — | — |
| Mon 6a | Rain | 44°7° (likely 44°7° to 44°7°) | 39°4° | 80%, 0.04 in1 mm | 8 mph13 km/h from S | 99% | — | — |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Fog. High 60°16°, low 37°3°. Typical 60°16° / 41°5°. Dry. One forecast only.
Morning
6 AM–noon
Mostly cloudy, 33°1°Dry
Afternoon
noon–6 PM
Partly sunny, 60°16°Dry
Evening
6 PM–midnight
Mostly cloudy, 48°9°Dry
Overnight
midnight–6 AM
Mostly cloudy, 39°4°Dry
Official NWS forecast
Today: Areas of frost and areas of fog before 10am. Mostly sunny. High near 60, with temperatures falling to around 58 in the afternoon. North northwest wind around 2 mph.
Tonight: Mostly cloudy. Low around 37, with temperatures rising to around 39 overnight. South southeast wind 0 to 5 mph.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 56°13°–60°16°
- Low, likely
- 33°1°–37°3°
- Typical high / low
- 60°16° / 41°5°
- Wind
- 5 mph7 km/h
Tomorrow, Oct 25. Rain. High 63°17°, low 42°6°. Typical 60°16° / 40°4°. Rain 0.65 in17 mm, 70% chance. One forecast only.
Morning
6 AM–noon
Partly sunny, 40°4°Dry
Afternoon
noon–6 PM
Rain, 62°17°70% chance · 1.1 in27 mm
Evening
6 PM–midnight
Rain, 51°11°80% chance · 0.57 in14 mm
Overnight
midnight–6 AM
Rain, 44°7°80% chance · 0.39 in9.9 mm
Official NWS forecast
Day: Rain likely after 1pm. Mostly cloudy. High near 63, with temperatures falling to around 59 in the afternoon. South wind around 6 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 42. South wind 5 to 10 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.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 53°12°–63°17°
- Low, likely
- 42°6°–43°6°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 8 mph13 km/h
Monday, Oct 26. Rain. High 58°14°, low 40°4°. Typical 60°16° / 40°4°. Rain 0.59 in15 mm, 80% chance. One forecast only.
Official NWS forecast
Day: Rain. Mostly cloudy, with a high near 58. South southwest wind 6 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 52°11°–58°14°
- Low, likely
- 40°4°–48°9°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 10 mph16 km/h
Tuesday, Oct 27. Rain. High 60°16°, low 38°3°. Typical 59°15° / 40°4°. Rain 0.32 in8.1 mm, 30% chance. One forecast only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 60.
Night: A chance of rain. Mostly cloudy, with a low around 38.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 52°11°–60°16°
- Low, likely
- 38°3°–46°8°
- Typical high / low
- 59°15° / 40°4°
- Wind
- 8 mph12 km/h
Wednesday, Oct 28. Rain. High 58°14°, low 37°3°. Typical 59°15° / 40°4°. Rain 0.42 in11 mm, 50% chance. One forecast 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.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 50°10°–58°14°
- Low, likely
- 37°3°–44°7°
- Typical high / low
- 59°15° / 40°4°
- Wind
- 9 mph14 km/h
Thursday, Oct 29. Rain. High 58°14°, low 34°1°. Typical 59°15° / 40°4°. Rain 0.45 in11 mm, 40% chance. One forecast only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 58.
Night: A slight chance of rain. Mostly cloudy, with a low around 34.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 49°9°–58°14°
- Low, likely
- 34°1°–41°5°
- Typical high / low
- 59°15° / 40°4°
- Wind
- 8 mph12 km/h
Friday, Oct 30. Rain. High 58°14°, low 34°1°. Typical 58°14° / 40°4°. Rain 0.21 in5.3 mm, 20% chance. One forecast only.
Official NWS forecast
Day: A slight chance of rain before 5pm. Partly sunny, with a high near 58.
Night: Partly cloudy, with a low around 34.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 48°9°–58°14°
- Low, likely
- 34°1°–38°3°
- Typical high / low
- 58°14° / 40°4°
- Wind
- 6 mph9 km/h
The outlook
Today
Dry, high 60°, low 37°.
Tomorrow
71% chance of rain, high 63°, low 42°, warming up.
Monday
82% chance of rain, high 58°, low 40°, cooling off.
Rest of week
Highs 58–60°; chance of precipitation on Wednesday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PQR) (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
Thomas Creek near Scio
15 mi- Level
- 3.8 ft
- Flow
- 9 cfs
Forecast peak 3.9 ft Thu 5 AM
Reading from Sat 5:45 AM · NWS gauge page
Willamette River at Albany
17 mi- Level
- 3.2 ft
- Flow
- 4,770 cfs
Forecast peak 3.6 ft Tue 11 PM
Reading from Sat 6 AM · NWS gauge page
Santiam River at Jefferson
18 mi- Level
- 2.7 ft
- Flow
- 2,070 cfs
Forecast peak 2.9 ft Mon 11 PM
Reading from Sat 6 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 70% less heating than a typical week.
This week 32Typical 107
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 23
- h below 17°F
- 0
- h below 5°F
- 0
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.
Comfort
Dry air outside (dew point 33°F).
Open the windows?
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Is this typical?
FOSTER DAM · official normals 1991–2020 · records 1969–2026
Oct 24, today vs a typical year
Today’s expected high is about typical for the date.
- Normal high / low
- 60°16° / 41°5°
- Forecast high / low
- 60°16° / 37°3°
- Record high
- 78°26° in 2007
- Record low
- 31°−1° in 1980
Last 7 days vs normal
On average 1°0° warmer than normal (daily mean temperature).
- +1°±0°SunOct 18
- +1°MonOct 19
- +1°TueOct 20
- +3°+1°WedOct 21
- +5°+3°ThuOct 22
- −1°FriOct 23
- −3°−2°SatOct 24
Waterloo weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:38 AM, sunset 6:11 PM.
- Daylight
- 10 h 34 min
- Losing 2 min 53 s a day; shortest Dec 21, 1 h 44 min less
- Golden hour
- 5:31–6:30 PM
- Morning 7:20–8:19 AM
- Blue hour
- 6:30–6:41 PM
- Morning 7:08–7:20 AM; first light 7:08 AM
Stars tonight? Unknown
Cloud forecast not available for tonight.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 5:56 AM · rises 5:13 PM
- Full moon
- Oct 25
- New moon
- Nov 8
