Siuslaw River near Mapleton
12 mi- Level
- 2.8 ft
- Flow
- 73 cfs
Forecast peak 3.3 ft Mon 11 PM
Reading from Sat 6 AM · NWS gauge page
Appearance
Ends in 3 h 6 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 6:35 AM PDT at KOTH
Foggy and 39°4°.
Today: low 41°5° (likely 37°3° to 41°5°), high 54°12° (likely 54°12° to 61°16°).
Now 39°4°
Fog
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 6a | Partly cloudy | 41°5° (likely 38°3° to 42°6°) | 38°3° | 0% | 5 mph8 km/h from ENE, gusts 8 mph13 km/h | 96% | 81% | 0 |
| Sat 7a | Cloudy | 40°4° (likely 38°3° to 42°6°) | 37°3° | 0% | 5 mph8 km/h from ENE, gusts 9 mph14 km/h | 96% | 85% | 0 |
| Sat 8a | Cloudy | 41°5° (likely 38°3° to 42°6°) | 38°3° | 0% | 5 mph8 km/h from ENE, gusts 9 mph14 km/h | 98% | 87% | 0 |
| Sat 9a | Cloudy | 43°6° (likely 42°6° to 45°7°) | 41°5° | 0% | 3 mph5 km/h from ENE, gusts 8 mph14 km/h | 97% | 86% | 0 |
| Sat 10a | Cloudy | 47°8° (likely 47°8° to 51°11°) | 46°8° | 0% | 3 mph5 km/h from ENE, gusts 7 mph12 km/h | 94% | 79% | 1 |
| Sat 11a | Cloudy | 49°9° (likely 49°9° to 56°13°) | 48°9° | 0% | 3 mph5 km/h from NE, gusts 6 mph10 km/h | 91% | 78% | 2 |
| Sat 12p | Partly sunny | 50°10° (likely 50°10° to 58°14°) | 48°9° | 0% | 5 mph8 km/h from N, gusts 6 mph10 km/h | 92% | 69% | 3 |
| Sat 1p | Cloudy | 51°11° (likely 51°11° to 59°15°) | 51°11° | 0% | 6 mph10 km/h from NNW, gusts 9 mph14 km/h | 91% | 61% | 3 |
| Sat 2p | Cloudy | 53°12° (likely 53°12° to 61°16°) | 53°12° | 0% | 7 mph11 km/h from NNW, gusts 11 mph18 km/h | 86% | 69% | 3 |
| Sat 3p | Cloudy | 53°12° (likely 53°12° to 60°16°) | 53°12° | 0% | 8 mph13 km/h from NNW, gusts 14 mph22 km/h | 86% | 81% | 3 |
| Sat 4p | Cloudy | 54°12° (likely 53°12° to 59°15°) | 54°12° | 0% | 9 mph14 km/h from NNW, gusts 15 mph24 km/h | 88% | 82% | 2 |
| Sat 5p | Cloudy | 53°12° (likely 53°12° to 57°14°) | 53°12° | 0% | 9 mph14 km/h from NNW, gusts 14 mph22 km/h | 94% | 82% | 1 |
| Sat 6p | Cloudy | 51°11° (likely 51°11° to 55°13°) | 51°11° | 0% | 7 mph11 km/h from NNW, gusts 11 mph18 km/h | 100% | 82% | 0 |
| Sat 7p | Cloudy | 51°11° (likely 49°9° to 52°11°) | 51°11° | 0% | 6 mph10 km/h from NNW, gusts 11 mph17 km/h | 98% | 81% | 0 |
| Sat 8p | Cloudy | 49°9° (likely 48°9° to 50°10°) | 48°9° | 0% | 3 mph5 km/h from N, gusts 9 mph14 km/h | 99% | 79% | 0 |
| Sat 9p | Cloudy | 47°8° (likely 46°8° to 50°10°) | 47°8° | 0% | 2 mph3 km/h from N, gusts 7 mph12 km/h | 98% | 82% | 0 |
| Sat 10p | Cloudy | 46°8° (likely 46°8° to 49°9°) | 46°8° | 0% | 1 mph2 km/h from N, gusts 6 mph9 km/h | 97% | 83% | 0 |
| Sat 11p | Cloudy | 46°8° (likely 45°7° to 48°9°) | 46°8° | 5% | 1 mph2 km/h from NNW, gusts 4 mph6 km/h | 98% | 82% | 0 |
| Sun 12a | Cloudy | 44°7° (likely 44°7° to 48°9°) | 44°7° | 5% | 1 mph2 km/h from E, gusts 5 mph7 km/h | 100% | 78% | 0 |
| Sun 1a | Cloudy | 44°7° (likely 44°7° to 48°9°) | 42°6° | 5% | 3 mph5 km/h from SSE, gusts 7 mph11 km/h | 100% | 74% | 0 |
| Sun 2a | Cloudy | 44°7° (likely 44°7° to 48°9°) | 41°5° | 5% | 5 mph8 km/h from SSE, gusts 9 mph15 km/h | 100% | 71% | 0 |
| Sun 3a | Cloudy | 43°6° (likely 43°6° to 49°9°) | 39°4° | 5% | 6 mph10 km/h from SSE, gusts 11 mph17 km/h | 99% | 72% | 0 |
| Sun 4a | Cloudy | 44°7° (likely 44°7° to 49°9°) | 39°4° | 10% | 8 mph13 km/h from SSE, gusts 12 mph19 km/h | 98% | 77% | 0 |
| Sun 5a | Cloudy | 44°7° (likely 44°7° to 50°10°) | 38°3° | 20%, 0.07 in1.8 mm | 12 mph19 km/h from SSE, gusts 15 mph24 km/h | 96% | 67% | 0 |
| Sun 6a | Cloudy | 43°6° (likely 43°6° to 51°11°) | 37°3° | 20%, 0.07 in1.8 mm | 12 mph19 km/h from SSE, gusts 17 mph27 km/h | 96% | 100% | 0 |
| Sun 7a | Cloudy | 46°8° (likely 46°8° to 52°11°) | 41°5° | 20%, 0.07 in1.8 mm | 12 mph19 km/h from SSE, gusts 19 mph30 km/h | 94% | 100% | 0 |
| Sun 8a | Cloudy | 46°8° (likely 46°8° to 53°12°) | 39°4° | 20%, 0.07 in1.8 mm | 18 mph29 km/h from S, gusts 20 mph32 km/h | 96% | 100% | 0 |
| Sun 9a | Cloudy | 48°9° (likely 48°9° to 54°12°) | 41°5° | 30%, 0.07 in1.8 mm | 18 mph29 km/h from S, gusts 24 mph38 km/h | 99% | 100% | 0 |
| Sun 10a | Rain | 51°11° (likely 51°11° to 54°12°) | 51°11° | 50%, 0.07 in1.8 mm | 18 mph29 km/h from S, gusts 24 mph39 km/h | 100% | 100% | 1 |
| Sun 11a | Rain | 52°11° (likely 52°11° to 53°12°) | 52°11° | 70%, 0.24 in6.1 mm | 21 mph34 km/h from S, gusts 24 mph39 km/h | 100% | 100% | 1 |
| Sun 12p | Rain | 52°11° (likely 52°11° to 53°12°) | 52°11° | 80%, 0.24 in6.1 mm | 21 mph34 km/h from S, gusts 29 mph47 km/h | 100% | 100% | 2 |
| Sun 1p | Rain | 53°12° (likely 52°11° to 54°12°) | 53°12° | 80%, 0.24 in6.1 mm | 21 mph34 km/h from S, gusts 33 mph54 km/h | 100% | 98% | 1 |
| Sun 2p | Rain | 53°12° (likely 53°12° to 54°12°) | 53°12° | 70%, 0.24 in6.1 mm | 22 mph35 km/h from SSW, gusts 24 mph39 km/h | 100% | 96% | 0 |
| Sun 3p | Drizzle | 53°12° (likely 52°11° to 54°12°) | 53°12° | 60%, 0.24 in6.1 mm | 22 mph35 km/h from SSW, gusts 27 mph43 km/h | 100% | 93% | 0 |
| Sun 4p | Rain | 54°12° (likely 52°11° to 54°12°) | 54°12° | 80%, 0.24 in6.1 mm | 22 mph35 km/h from SSW, gusts 26 mph41 km/h | 100% | 76% | 0 |
| Sun 5p | Cloudy | 53°12° (likely 53°12° to 54°12°) | 53°12° | 90%, 0.14 in3.6 mm | 20 mph32 km/h from SSW, gusts 28 mph45 km/h | 100% | 88% | 0 |
| Sun 6p | Cloudy | 52°11° (likely 52°11° to 53°12°) | 52°11° | 90%, 0.14 in3.6 mm | 20 mph32 km/h from SSW, gusts 27 mph44 km/h | 100% | 93% | 0 |
| Sun 7p | Rain | 52°11° (likely 52°11° to 53°12°) | 52°11° | 90%, 0.14 in3.6 mm | 20 mph32 km/h from SSW, gusts 24 mph38 km/h | 100% | 57% | 0 |
| Sun 8p | Rain | 52°11° (likely 52°11° to 53°12°) | 52°11° | 90%, 0.14 in3.6 mm | 18 mph29 km/h from SSW, gusts 26 mph42 km/h | 100% | 100% | 0 |
| Sun 9p | Rain | 51°11° (likely 51°11° to 53°12°) | 51°11° | 90%, 0.14 in3.6 mm | 18 mph29 km/h from SSW, gusts 27 mph43 km/h | 100% | 100% | 0 |
| Sun 10p | Rain | 51°11° (likely 51°11° to 53°12°) | 51°11° | 90%, 0.14 in3.6 mm | 18 mph29 km/h from SSW, gusts 21 mph34 km/h | 100% | 100% | 0 |
| Sun 11p | Rain | 50°10° (likely 50°10° to 53°12°) | 43°6° | 90%, 0.14 in3.6 mm | 22 mph35 km/h from S, gusts 21 mph33 km/h | 100% | 100% | 0 |
| Mon 12a | Rain | 50°10° (likely 50°10° to 52°11°) | 43°6° | 90%, 0.14 in3.6 mm | 22 mph35 km/h from S, gusts 21 mph35 km/h | 100% | 99% | 0 |
| Mon 1a | Rain | 49°9° (likely 49°9° to 53°12°) | 42°6° | 90%, 0.14 in3.6 mm | 22 mph35 km/h from S, gusts 25 mph40 km/h | 100% | 99% | 0 |
| Mon 2a | Drizzle | 49°9° (likely 49°9° to 53°12°) | 42°6° | 90%, 0.14 in3.6 mm | 20 mph32 km/h from S, gusts 27 mph43 km/h | 100% | 99% | 0 |
| Mon 3a | Rain | 49°9° (likely 49°9° to 52°11°) | 42°6° | 90%, 0.14 in3.6 mm | 20 mph32 km/h from S, gusts 24 mph38 km/h | 100% | 99% | 0 |
| Mon 4a | Rain | 48°9° (likely 48°9° to 52°11°) | 41°5° | 90%, 0.14 in3.6 mm | 20 mph32 km/h from S, gusts 21 mph34 km/h | 100% | 99% | 0 |
| Mon 5a | Rain | 48°9° (likely 48°9° to 52°11°) | 42°6° | 90%, 0.11 in2.8 mm | 14 mph23 km/h from S, gusts 20 mph32 km/h | 100% | 93% | 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, with a high near 54. Northeast wind 3 to 9 mph.
Tonight: Patchy fog between 10pm and 1am, then a slight chance of rain. Mostly cloudy. Low around 41, with temperatures rising to around 44 overnight. Northeast wind 1 to 12 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
70% chance · 0.59 in15 mm
Afternoon
noon–6 PM
90% chance · 1.3 in34 mm
Evening
6 PM–midnight
90% chance · 0.84 in21 mm
Overnight
midnight–6 AM
90% chance · 0.81 in21 mm
Official NWS forecast
Day: Rain. Cloudy, with a high near 54. South wind 12 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Night: Rain. Cloudy, with a low around 46. South southwest wind 14 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
100% chance · 0.34 in8.7 mm
Afternoon
noon–6 PM
90% chance · 0.1 in2.6 mm
Evening
6 PM–midnight
70% chance · 0.05 in1.3 mm
Overnight
midnight–6 AM
60% 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 53. Southwest wind 10 to 18 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: A chance of rain. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance · 0.06 in1.6 mm
Afternoon
noon–6 PM
40% chance · 0.08 in2 mm
Evening
6 PM–midnight
20% chance
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 slight chance of rain before 11am. Mostly cloudy, with a high near 53.
Night: A chance of rain after 11pm. Mostly cloudy, with a low around 42.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
50% chance · 0.05 in1.2 mm
Afternoon
noon–6 PM
50% chance · 0.05 in1.3 mm
Evening
6 PM–midnight
50% chance · 0.04 in1 mm
Overnight
midnight–6 AM
60% chance · 0.1 in2.6 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 54.
Night: A chance of rain. Mostly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
60% chance · 0.08 in2.1 mm
Afternoon
noon–6 PM
50% chance · 0.13 in3.2 mm
Evening
6 PM–midnight
40% chance · 0.12 in3.1 mm
Overnight
midnight–6 AM
30% chance · 0.07 in1.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 53.
Night: A slight chance of rain. Mostly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
30% chance · 0.01 in0.3 mm
Afternoon
noon–6 PM
30% chance · 0.06 in1.5 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 slight chance of rain before 11am. Partly sunny, with a high near 54.
Night: Partly 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.
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 · 0.08 in2.1 mm
Afternoon
noon–6 PM
30% chance · 0.09 in2.2 mm
Evening
6 PM–midnight
30% 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 54°, low 41°.
91% chance of rain, high 54°, low 46°.
86% chance of rain, high 53°, low 44°.
Highs 53–57°; 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 3.3 ft Mon 11 PM
Reading from Sat 6 AM · NWS gauge page
Forecast peak 14.0 ft Tue 2 PM
Reading from Sat 5:30 AM · NWS gauge page
Reading from Sat 5:45 AM · NWS gauge page
Reading from Sat 5:15 AM · 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 2 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 4°2° colder than typical.
Heceta Beach weather by month: normals, records, snow and freeze dates
Sunrise 7:42 AM, sunset 6:17 PM.
Clouds most of the night (about 83% cover).
Waxing gibbous
97% lit · growing