Willamette River at Harrisburg
7.8 mi- Level
- 1.6 ft
- Flow
- 3,790 cfs
Forecast peak 1.9 ft Tue 11 AM
Reading from Sat 3:30 AM · NWS gauge page
Appearance
Ends in 4 h 41 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)Observed 4:50 AM PDT at KEUG
Freeze Warning. 32°0° and clear now.
Today: low 33°1° (likely 31°−1° to 38°3°), high 61°16° (likely 58°14° to 63°17°).
Now 32°0°
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 5a | Partly cloudy | 35°2° (likely 33°1° to 39°4°) | 35°2° | 0% | 1 mph2 km/h from N, gusts 3 mph4 km/h | 92% | 47% | 0 |
| Sat 6a | Cloudy | 35°2° (likely 33°1° to 38°3°) | 35°2° | 0% | 1 mph2 km/h from N, gusts 3 mph5 km/h | 94% | 83% | 0 |
| Sat 7a | Fog | 33°1° (likely 32°0° to 38°3°) | 33°1° | 0% | 1 mph2 km/h from N, gusts 2 mph2 km/h | 95% | 85% | 0 |
| Sat 8a | Cloudy | 34°1° (likely 31°−1° to 38°3°) | 34°1° | 0% | 1 mph2 km/h from NNE, gusts 2 mph2 km/h | 94% | 88% | 0 |
| Sat 9a | Fog | 38°3° (likely 34°1° to 41°5°) | 38°3° | 0% | 1 mph2 km/h from NE, gusts 2 mph3 km/h | 95% | 90% | 0 |
| Sat 10a | Cloudy | 44°7° (likely 40°4° to 44°7°) | 44°7° | 0% | 1 mph2 km/h from NE, gusts 7 mph11 km/h | 87% | 89% | 1 |
| Sat 11a | Cloudy | 48°9° (likely 46°8° to 48°9°) | 48°9° | 0% | 2 mph3 km/h from NNE, gusts 6 mph9 km/h | 75% | 84% | 1 |
| Sat 12p | Cloudy | 52°11° (likely 51°11° to 53°12°) | 52°11° | 0% | 3 mph5 km/h from NNE, gusts 4 mph7 km/h | 66% | 80% | 2 |
| Sat 1p | Cloudy | 57°14° (likely 54°12° to 57°14°) | 57°14° | 0% | 3 mph5 km/h from N, gusts 4 mph7 km/h | 59% | 79% | 2 |
| Sat 2p | Cloudy | 59°15° (likely 56°13° to 60°16°) | 59°15° | 0% | 3 mph5 km/h from N, gusts 5 mph7 km/h | 53% | 62% | 2 |
| Sat 3p | Cloudy | 60°16° (likely 58°14° to 62°17°) | 60°16° | 0% | 2 mph3 km/h from NNE, gusts 4 mph7 km/h | 49% | 67% | 2 |
| Sat 4p | Cloudy | 61°16° (likely 58°14° to 63°17°) | 61°16° | 0% | 2 mph3 km/h from NNE, gusts 5 mph7 km/h | 48% | 70% | 1 |
| Sat 5p | Cloudy | 59°15° (likely 57°14° to 62°17°) | 59°15° | 0% | 1 mph2 km/h from NNE, gusts 4 mph7 km/h | 49% | 81% | 1 |
| Sat 6p | Cloudy | 56°13° (likely 54°12° to 57°14°) | 56°13° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 57% | 82% | 0 |
| Sat 7p | Cloudy | 53°12° (likely 50°10° to 53°12°) | 53°12° | 0% | 0 mph0 km/h, gusts 1 mph2 km/h | 65% | 81% | 0 |
| Sat 8p | Cloudy | 49°9° (likely 49°9° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 69% | 80% | 0 |
| Sat 9p | Cloudy | 47°8° (likely 47°8° to 51°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 74% | 81% | 0 |
| Sat 10p | Cloudy | 46°8° (likely 46°8° to 50°10°) | 46°8° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 75% | 82% | 0 |
| Sat 11p | Cloudy | 45°7° (likely 44°7° to 46°8°) | 45°7° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 77% | 82% | 0 |
| Sun 12a | Cloudy | 44°7° (likely 43°6° to 45°7°) | 44°7° | 0% | 1 mph2 km/h from SSW, gusts 4 mph6 km/h | 78% | 82% | 0 |
| Sun 1a | Cloudy | 43°6° (likely 42°6° to 44°7°) | 43°6° | 0% | 2 mph3 km/h from SSW, gusts 5 mph8 km/h | 77% | 82% | 0 |
| Sun 2a | Cloudy | 42°6° (likely 40°4° to 44°7°) | 40°4° | 0% | 3 mph5 km/h from SSW, gusts 5 mph9 km/h | 78% | 88% | 0 |
| Sun 3a | Cloudy | 40°4° (likely 40°4° to 43°6°) | 38°3° | 0% | 3 mph5 km/h from SW, gusts 6 mph10 km/h | 80% | 78% | 0 |
| Sun 4a | Cloudy | 39°4° (likely 39°4° to 43°6°) | 37°3° | 0% | 3 mph5 km/h from SW, gusts 7 mph12 km/h | 83% | 72% | 0 |
| Sun 5a | Cloudy | 39°4° (likely 39°4° to 43°6°) | 36°2° | 5% | 5 mph8 km/h from S, gusts 7 mph12 km/h | 84% | 69% | 0 |
| Sun 6a | Cloudy | 37°3° (likely 37°3° to 44°7°) | 33°1° | 5% | 5 mph8 km/h from S, gusts 7 mph12 km/h | 85% | 71% | 0 |
| Sun 7a | Cloudy | 39°4° (likely 38°3° to 45°7°) | 36°2° | 0% | 5 mph8 km/h from S, gusts 7 mph12 km/h | 85% | 73% | 0 |
| Sun 8a | Cloudy | 39°4° (likely 38°3° to 46°8°) | 35°2° | 0% | 6 mph10 km/h from S, gusts 7 mph12 km/h | 85% | 79% | 0 |
| Sun 9a | Mostly cloudy | 43°6° (likely 42°6° to 49°9°) | 39°4° | 0% | 6 mph10 km/h from S, gusts 8 mph13 km/h | 86% | 76% | 0 |
| Sun 10a | Mostly cloudy | 50°10° (likely 50°10° to 52°11°) | 48°9° | 10% | 6 mph10 km/h from S, gusts 14 mph22 km/h | 77% | 77% | 1 |
| Sun 11a | Cloudy | 54°12° (likely 52°11° to 57°14°) | 54°12° | 10%, 0.13 in3.3 mm | 8 mph13 km/h from S, gusts 18 mph28 km/h | 69% | 91% | 2 |
| Sun 12p | Rain | 57°14° (likely 53°12° to 60°16°) | 57°14° | 30%, 0.13 in3.3 mm | 8 mph13 km/h from S, gusts 18 mph30 km/h | 67% | 99% | 3 |
| Sun 1p | Rain | 59°15° (likely 54°12° to 62°17°) | 59°15° | 50%, 0.13 in3.3 mm | 8 mph13 km/h from S, gusts 20 mph31 km/h | 65% | 100% | 3 |
| Sun 2p | Rain | 60°16° (likely 54°12° to 64°18°) | 60°16° | 70%, 0.13 in3.3 mm | 8 mph13 km/h from SSW, gusts 15 mph24 km/h | 65% | 71% | 3 |
| Sun 3p | Rain | 61°16° (likely 54°12° to 64°18°) | 61°16° | 70%, 0.13 in3.3 mm | 8 mph13 km/h from SSW, gusts 12 mph19 km/h | 66% | 65% | 3 |
| Sun 4p | Rain | 60°16° (likely 54°12° to 64°18°) | 60°16° | 60%, 0.13 in3.3 mm | 8 mph13 km/h from SSW, gusts 12 mph20 km/h | 69% | 62% | 2 |
| Sun 5p | Rain | 59°15° (likely 52°11° to 62°17°) | 59°15° | 70%, 0.06 in1.5 mm | 7 mph11 km/h from SSW, gusts 14 mph22 km/h | 73% | 60% | 1 |
| Sun 6p | Rain | 57°14° (likely 52°11° to 57°14°) | 57°14° | 70%, 0.06 in1.5 mm | 7 mph11 km/h from SSW, gusts 20 mph32 km/h | 79% | 59% | 0 |
| Sun 7p | Rain | 54°12° (likely 51°11° to 54°12°) | 54°12° | 70%, 0.06 in1.5 mm | 7 mph11 km/h from SSW, gusts 19 mph31 km/h | 85% | 84% | 0 |
| Sun 8p | Rain | 51°11° (likely 49°9° to 53°12°) | 51°11° | 70%, 0.06 in1.5 mm | 5 mph8 km/h from SSW, gusts 14 mph22 km/h | 90% | 82% | 0 |
| Sun 9p | Rain | 51°11° (likely 49°9° to 52°11°) | 51°11° | 70%, 0.06 in1.5 mm | 5 mph8 km/h from SSW, gusts 14 mph23 km/h | 92% | 75% | 0 |
| Sun 10p | Rain | 50°10° (likely 49°9° to 52°11°) | 48°9° | 70%, 0.06 in1.5 mm | 5 mph8 km/h from SSW, gusts 14 mph22 km/h | 93% | 96% | 0 |
| Sun 11p | Drizzle | 50°10° (likely 50°10° to 51°11°) | 46°8° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S, gusts 13 mph20 km/h | 92% | 96% | 0 |
| Mon 12a | Drizzle | 49°9° (likely 49°9° to 51°11°) | 45°7° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S, gusts 9 mph15 km/h | 91% | 99% | 0 |
| Mon 1a | Rain | 49°9° (likely 49°9° to 51°11°) | 45°7° | 80%, 0.07 in1.8 mm | 10 mph16 km/h from S, gusts 10 mph16 km/h | 90% | 97% | 0 |
| Mon 2a | Rain | 48°9° (likely 48°9° to 51°11°) | 44°7° | 80%, 0.07 in1.8 mm | 8 mph13 km/h from S, gusts 10 mph16 km/h | 89% | 84% | 0 |
| Mon 3a | Rain | 47°8° (likely 47°8° to 51°11°) | 43°6° | 80%, 0.07 in1.8 mm | 8 mph13 km/h from S, gusts 15 mph25 km/h | 89% | 95% | 0 |
| Mon 4a | Rain | 46°8° (likely 46°8° to 51°11°) | 42°6° | 80%, 0.07 in1.8 mm | 8 mph13 km/h from S, gusts 16 mph26 km/h | 91% | 95% | 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. North northeast wind around 3 mph.
Tonight: Areas of frost. Partly cloudy. Low around 33, with temperatures rising to around 35 overnight. North wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
70% chance · 0.71 in18 mm
Evening
6 PM–midnight
80% chance · 0.37 in9.4 mm
Overnight
midnight–6 AM
80% chance · 0.37 in9.3 mm
Official NWS forecast
Day: Rain likely after noon. Mostly cloudy, with a high near 62. South southwest wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: Rain. Mostly cloudy, with a low around 42. South southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
80% chance · 0.09 in2.3 mm
Afternoon
noon–6 PM
90% chance · 0.08 in2 mm
Evening
6 PM–midnight
60% chance · 0.03 in0.7 mm
Overnight
midnight–6 AM
40% chance · 0.04 in1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain. Mostly cloudy, with a high near 58. Chance of precipitation is 80%.
Night: A chance of rain. Mostly cloudy, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
40% chance · 0.11 in2.8 mm
Afternoon
noon–6 PM
50% chance · 0.05 in1.2 mm
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 5pm. Mostly cloudy, with a high near 60.
Night: A chance of rain after 11pm. Mostly cloudy, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
40% chance · 0.02 in0.5 mm
Afternoon
noon–6 PM
50% chance · 0.03 in0.7 mm
Evening
6 PM–midnight
40% chance
Overnight
midnight–6 AM
40% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 59.
Night: A chance of rain. Mostly cloudy, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
40% chance · 0.06 in1.5 mm
Afternoon
noon–6 PM
50% chance · 0.04 in1.1 mm
Evening
6 PM–midnight
30% chance · 0.02 in0.6 mm
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 5pm. Partly sunny, with a high near 58.
Night: Mostly cloudy, with a low around 35.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
30% chance · 0.04 in0.9 mm
Evening
6 PM–midnight
20% chance · 0.02 in0.5 mm
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain between 11am and 5pm. Mostly 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
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 · 0.02 in0.5 mm
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
20% chance · 0.01 in0.3 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 61°, low 33°.
71% chance of rain, high 62°, low 42°.
83% chance of rain, high 58°, low 40°, cooling off.
Mostly dry, highs 52–60°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PQR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 1.9 ft Tue 11 AM
Reading from Sat 3:30 AM · NWS gauge page
Forecast peak 5.3 ft Mon 5 PM
Reading from Sat 3:45 AM · NWS gauge page
Forecast peak 9.9 ft Mon 11 PM
Reading from Sat 3:45 AM · NWS gauge page
Forecast peak 1.2 ft Tue 5 AM
Reading from Sat 2:45 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 70% 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 30°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.
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° colder than normal (daily mean temperature).
Cheshire weather by month: normals, records, snow and freeze dates
Sunrise 7:39 AM, sunset 6:14 PM.
Clouds most of the night (about 72% cover).
Waxing gibbous
96% lit · growing