Johnson Creek near Sycamore
3.0 mi- Level
- 1.2 ft
- Flow
- 1 cfs
Forecast peak 1.5 ft Sun 11 PM
Reading from Fri 10:30 PM · NWS gauge page
Appearance
Ends in 9 h 20 min
Issued for this forecast zone · National Weather Service Portland OR
What
Temperatures of 33 to 36 degrees will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
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, or temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Areas: Clatsop County Coast; Tillamook County Coast; Central Coast of Oregon; Central Oregon Coast Range Lowlands; Central Oregon Coast Range; Lower Columbia River; Tualatin Valley; Inner Portland Metro; East Portland Metro; Outer Southeast Portland Metro; West Columbia River Gorge of Oregon above 500 ft; Clackamas County Cascade Foothills; Willapa Hills; Cowlitz County Lowlands; North Clark County Lowlands; Inner Vancouver Metro; East Clark County Lowlands; South Washington Cascade Foothills
See it on weather.gov (opens in a new tab)Observed 12:10 AM PDT at KTTD
Clear and 43°6°.
Today: low 37°3° (likely 34°1° to 40°4°), high 60°16° (likely 56°13° to 61°16°).
Now 43°6°
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 | Mostly clear | 43°6° (likely 40°4° to 43°6°) | 41°5° | 0% | 3 mph5 km/h from ENE, gusts 5 mph9 km/h | 84% | 13% | 0 |
| Sat 1a | Partly cloudy | 42°6° (likely 39°4° to 42°6°) | 40°4° | 0% | 3 mph5 km/h from NE, gusts 4 mph7 km/h | 86% | 32% | 0 |
| Sat 2a | Partly cloudy | 41°5° (likely 38°3° to 42°6°) | 39°4° | 0% | 3 mph5 km/h from NNE, gusts 4 mph7 km/h | 89% | 66% | 0 |
| Sat 3a | Partly cloudy | 41°5° (likely 38°3° to 41°5°) | 39°4° | 0% | 3 mph5 km/h from N, gusts 4 mph7 km/h | 90% | 70% | 0 |
| Sat 4a | Partly cloudy | 39°4° (likely 37°3° to 40°4°) | 37°3° | 0% | 3 mph5 km/h from N, gusts 6 mph9 km/h | 91% | 64% | 0 |
| Sat 5a | Partly cloudy | 39°4° (likely 35°2° to 40°4°) | 37°3° | 0% | 3 mph5 km/h from N, gusts 6 mph9 km/h | 91% | 68% | 0 |
| Sat 6a | Cloudy | 39°4° (likely 35°2° to 40°4°) | 37°3° | 0% | 3 mph5 km/h from NNE, gusts 6 mph9 km/h | 92% | 72% | 0 |
| Sat 7a | Cloudy | 38°3° (likely 34°1° to 40°4°) | 38°3° | 0% | 2 mph3 km/h from NNE, gusts 5 mph8 km/h | 94% | 80% | 0 |
| Sat 8a | Cloudy | 39°4° (likely 34°1° to 40°4°) | 39°4° | 0% | 2 mph3 km/h from NNE, gusts 4 mph7 km/h | 93% | 81% | 0 |
| Sat 9a | Cloudy | 40°4° (likely 38°3° to 42°6°) | 40°4° | 0% | 2 mph3 km/h from NNE, gusts 4 mph7 km/h | 89% | 83% | 0 |
| Sat 10a | Cloudy | 44°7° (likely 44°7° to 46°8°) | 44°7° | 0% | 2 mph3 km/h from NNE, gusts 7 mph11 km/h | 84% | 82% | 1 |
| Sat 11a | Cloudy | 47°8° (likely 46°8° to 51°11°) | 47°8° | 0% | 2 mph3 km/h from NNE, gusts 8 mph12 km/h | 74% | 77% | 2 |
| Sat 12p | Cloudy | 51°11° (likely 50°10° to 54°12°) | 51°11° | 0% | 2 mph3 km/h from NNE, gusts 6 mph9 km/h | 65% | 81% | 3 |
| Sat 1p | Cloudy | 55°13° (likely 53°12° to 58°14°) | 55°13° | 0% | 2 mph3 km/h from N, gusts 4 mph7 km/h | 57% | 81% | 3 |
| Sat 2p | Cloudy | 57°14° (likely 55°13° to 60°16°) | 57°14° | 0% | 2 mph3 km/h from N, gusts 3 mph5 km/h | 53% | 82% | 3 |
| Sat 3p | Cloudy | 58°14° (likely 56°13° to 61°16°) | 58°14° | 0% | 2 mph3 km/h from NNW, gusts 4 mph6 km/h | 50% | 81% | 2 |
| Sat 4p | Cloudy | 60°16° (likely 56°13° to 61°16°) | 60°16° | 0% | 2 mph3 km/h from W, gusts 3 mph5 km/h | 48% | 82% | 2 |
| Sat 5p | Cloudy | 58°14° (likely 55°13° to 60°16°) | 58°14° | 0% | 2 mph3 km/h from SW, gusts 3 mph5 km/h | 52% | 82% | 1 |
| Sat 6p | Cloudy | 56°13° (likely 52°11° to 56°13°) | 56°13° | 0% | 1 mph2 km/h from WSW, gusts 3 mph4 km/h | 56% | 83% | 0 |
| Sat 7p | Cloudy | 54°12° (likely 50°10° to 54°12°) | 54°12° | 0% | 2 mph3 km/h from S, gusts 2 mph4 km/h | 60% | 83% | 0 |
| Sat 8p | Cloudy | 50°10° (likely 48°9° to 51°11°) | 50°10° | 0% | 2 mph3 km/h from S, gusts 3 mph4 km/h | 66% | 77% | 0 |
| Sat 9p | Cloudy | 49°9° (likely 47°8° to 50°10°) | 49°9° | 0% | 2 mph3 km/h from SSE, gusts 3 mph5 km/h | 68% | 82% | 0 |
| Sat 10p | Cloudy | 48°9° (likely 45°7° to 50°10°) | 48°9° | 5% | 2 mph3 km/h from S, gusts 3 mph5 km/h | 72% | 82% | 0 |
| Sat 11p | Cloudy | 47°8° (likely 44°7° to 49°9°) | 46°8° | 5% | 3 mph5 km/h from S, gusts 4 mph6 km/h | 73% | 82% | 0 |
| Sun 12a | Cloudy | 46°8° (likely 43°6° to 47°8°) | 45°7° | 5% | 3 mph5 km/h from SSE, gusts 5 mph8 km/h | 74% | 78% | 0 |
| Sun 1a | Cloudy | 45°7° (likely 43°6° to 45°7°) | 43°6° | 5% | 5 mph8 km/h from SSE, gusts 5 mph8 km/h | 76% | 76% | 0 |
| Sun 2a | Cloudy | 45°7° (likely 43°6° to 45°7°) | 43°6° | 5% | 5 mph8 km/h from SSE, gusts 5 mph8 km/h | 76% | 72% | 0 |
| Sun 3a | Mostly cloudy | 44°7° (likely 42°6° to 44°7°) | 41°5° | 0% | 5 mph8 km/h from SSE, gusts 5 mph8 km/h | 76% | 65% | 0 |
| Sun 4a | Partly cloudy | 43°6° (likely 42°6° to 43°6°) | 40°4° | 0% | 5 mph8 km/h from SSE, gusts 6 mph10 km/h | 76% | 73% | 0 |
| Sun 5a | Cloudy | 43°6° (likely 40°4° to 43°6°) | 40°4° | 20%, 0.02 in0.5 mm | 5 mph8 km/h from SSE, gusts 6 mph10 km/h | 75% | 74% | 0 |
| Sun 6a | Rain | 42°6° (likely 39°4° to 43°6°) | 39°4° | 20%, 0.02 in0.5 mm | 5 mph8 km/h from SSE, gusts 5 mph8 km/h | 76% | 63% | 0 |
| Sun 7a | Mostly cloudy | 43°6° (likely 38°3° to 43°6°) | 40°4° | 10%, 0.02 in0.5 mm | 5 mph8 km/h from SSE, gusts 5 mph9 km/h | 76% | 70% | 0 |
| Sun 8a | Cloudy | 43°6° (likely 39°4° to 43°6°) | 41°5° | 10%, 0.02 in0.5 mm | 3 mph5 km/h from SE, gusts 6 mph9 km/h | 76% | 77% | 0 |
| Sun 9a | Mostly cloudy | 45°7° (likely 42°6° to 45°7°) | 44°7° | 10%, 0.02 in0.5 mm | 3 mph5 km/h from SE, gusts 7 mph11 km/h | 76% | 76% | 0 |
| Sun 10a | Rain | 48°9° (likely 47°8° to 50°10°) | 47°8° | 30%, 0.02 in0.5 mm | 3 mph5 km/h from SE, gusts 13 mph20 km/h | 74% | 81% | 1 |
| Sun 11a | Cloudy | 50°10° (likely 47°8° to 55°13°) | 50°10° | 10%, 0.21 in5.3 mm | 2 mph3 km/h from SE, gusts 14 mph23 km/h | 70% | 83% | 2 |
| Sun 12p | Rain | 53°12° (likely 47°8° to 58°14°) | 53°12° | 30%, 0.21 in5.3 mm | 2 mph3 km/h from SE, gusts 15 mph24 km/h | 68% | 100% | 2 |
| Sun 1p | Rain | 55°13° (likely 48°9° to 61°16°) | 55°13° | 50%, 0.21 in5.3 mm | 2 mph3 km/h from SE, gusts 13 mph21 km/h | 66% | 100% | 3 |
| Sun 2p | Rain | 56°13° (likely 48°9° to 60°16°) | 56°13° | 60%, 0.21 in5.3 mm | 3 mph5 km/h from SE, gusts 15 mph24 km/h | 66% | 67% | 3 |
| Sun 3p | Rain | 57°14° (likely 49°9° to 59°15°) | 57°14° | 70%, 0.21 in5.3 mm | 3 mph5 km/h from SE, gusts 11 mph18 km/h | 66% | 100% | 2 |
| Sun 4p | Rain | 58°14° (likely 49°9° to 58°14°) | 58°14° | 70%, 0.21 in5.3 mm | 3 mph5 km/h from SE, gusts 10 mph16 km/h | 66% | 100% | 2 |
| Sun 5p | Rain | 56°13° (likely 49°9° to 56°13°) | 56°13° | 60%, 0.06 in1.5 mm | 3 mph5 km/h from SE, gusts 12 mph20 km/h | 69% | 96% | 1 |
| Sun 6p | Rain | 56°13° (likely 48°9° to 56°13°) | 56°13° | 60%, 0.06 in1.5 mm | 3 mph5 km/h from SE, gusts 6 mph9 km/h | 71% | 93% | 0 |
| Sun 7p | Rain | 54°12° (likely 48°9° to 54°12°) | 54°12° | 60%, 0.06 in1.5 mm | 3 mph5 km/h from SE, gusts 4 mph6 km/h | 74% | 87% | 0 |
| Sun 8p | Rain | 52°11° (likely 47°8° to 52°11°) | 52°11° | 60%, 0.06 in1.5 mm | 5 mph8 km/h from SE, gusts 4 mph6 km/h | 78% | 84% | 0 |
| Sun 9p | Rain | 52°11° (likely 45°7° to 52°11°) | 52°11° | 60%, 0.06 in1.5 mm | 5 mph8 km/h from SE, gusts 4 mph6 km/h | 80% | 93% | 0 |
| Sun 10p | Rain | 51°11° (likely 44°7° to 51°11°) | 51°11° | 60%, 0.06 in1.5 mm | 5 mph8 km/h from SE, gusts 4 mph6 km/h | 80% | 70% | 0 |
| Sun 11p | Rain | 51°11° (likely 43°6° to 51°11°) | 51°11° | 80%, 0.06 in1.5 mm | 8 mph13 km/h from SE, gusts 5 mph7 km/h | 80% | 91% | 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: Partly sunny. High near 60, with temperatures falling to around 58 in the afternoon. North wind around 3 mph.
Tonight: Partly cloudy. Low around 37, with temperatures rising to around 39 overnight. Northeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
30% chance · 0.31 in7.9 mm
Afternoon
noon–6 PM
70% chance · 1.1 in28 mm
Evening
6 PM–midnight
80% chance · 0.36 in9.1 mm
Overnight
midnight–6 AM
70% chance · 0.13 in3.4 mm
Official NWS forecast
Day: Rain likely. Mostly cloudy, with a high near 59. Southeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Night: Rain. Mostly cloudy, with a low around 46. Southeast wind 3 to 9 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
70% chance · 0.23 in5.9 mm
Afternoon
noon–6 PM
80% chance · 0.16 in3.9 mm
Evening
6 PM–midnight
60% chance · 0.1 in2.4 mm
Overnight
midnight–6 AM
50% chance · 0.03 in0.8 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: Rain likely. Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
40% chance · 0.05 in1.4 mm
Afternoon
noon–6 PM
40% chance · 0.09 in2.3 mm
Evening
6 PM–midnight
40% chance · 0.08 in2.1 mm
Overnight
midnight–6 AM
50% chance · 0.07 in1.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 59.
Night: A chance of rain. Mostly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance · 0.07 in1.8 mm
Afternoon
noon–6 PM
60% chance · 0.11 in2.7 mm
Evening
6 PM–midnight
60% chance · 0.06 in1.6 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: Rain likely. Mostly cloudy, with a high near 58.
Night: Rain likely. Mostly cloudy, with a low around 43.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
40% chance · 0.12 in3 mm
Afternoon
noon–6 PM
30% chance · 0.12 in3.1 mm
Evening
6 PM–midnight
30% chance · 0.07 in1.8 mm
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 57.
Night: A chance of rain. Mostly cloudy, with a low around 41.
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 slight chance of rain. 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
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 · 0.03 in0.7 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 60°, low 37°.
70% chance of rain, high 59°, low 46°.
75% chance of rain, high 58°, low 45°.
Highs 50–59°; 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 1.5 ft Sun 11 PM
Reading from Fri 10:30 PM · NWS gauge page
Forecast peak 23.1 ft Mon 11 PM
Reading from Fri 10 PM · NWS gauge page
Forecast peak 7.2 ft Wed 7 PM
Reading from Fri 10:15 PM · NWS gauge page
Forecast peak 56.0 ft Tue 5 PM
Reading from Fri 10:50 PM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 65% 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 9 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 about typical for the date.
On average 4°2° warmer than normal (daily mean temperature).
Happy Valley weather by month: normals, records, snow and freeze dates
Sunrise 7:38 AM, sunset 6:09 PM.
Clouds most of the night (about 58% cover).
Waxing gibbous
96% lit · growing