Siuslaw River near Mapleton
12 mi- Level
- 2.8 ft
- Flow
- 73 cfs
Forecast peak 3.3 ft Mon 11 PM
Reading from Sat 3 AM · NWS gauge page
Appearance
Ends in 5 h 14 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 3:35 AM PDT at K6S2
Clear and 41°5°.
Today: low 38°3° (likely 38°3° to 42°6°), high 60°16° (likely 56°13° to 61°16°).
Now 41°5°
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 4a | Fog | 40°4° (likely 38°3° to 43°6°) | 40°4° | 0% | 1 mph2 km/h from ENE, gusts 8 mph13 km/h | 96% | 45% | 0 |
| Sat 5a | Fog | 39°4° (likely 38°3° to 43°6°) | 39°4° | 0% | 1 mph2 km/h from ENE, gusts 8 mph14 km/h | 96% | 67% | 0 |
| Sat 6a | Cloudy | 39°4° (likely 38°3° to 42°6°) | 39°4° | 0% | 1 mph2 km/h from ENE, gusts 9 mph14 km/h | 96% | 78% | 0 |
| Sat 7a | Cloudy | 38°3° (likely 38°3° to 42°6°) | 38°3° | 0% | 1 mph2 km/h from ENE, gusts 8 mph13 km/h | 97% | 80% | 0 |
| Sat 8a | Cloudy | 39°4° (likely 38°3° to 42°6°) | 39°4° | 0% | 2 mph3 km/h from ENE, gusts 8 mph13 km/h | 98% | 86% | 0 |
| Sat 9a | Cloudy | 43°6° (likely 42°6° to 46°8°) | 43°6° | 0% | 2 mph3 km/h from ENE, gusts 9 mph14 km/h | 94% | 87% | 0 |
| Sat 10a | Cloudy | 49°9° (likely 47°8° to 51°11°) | 49°9° | 0% | 2 mph3 km/h from ENE, gusts 8 mph13 km/h | 83% | 86% | 1 |
| Sat 11a | Cloudy | 53°12° (likely 52°11° to 56°13°) | 53°12° | 0% | 2 mph3 km/h from NE, gusts 7 mph11 km/h | 74% | 80% | 1 |
| Sat 12p | Partly sunny | 56°13° (likely 55°13° to 60°16°) | 56°13° | 0% | 3 mph5 km/h from N, gusts 6 mph10 km/h | 70% | 71% | 2 |
| Sat 1p | Cloudy | 57°14° (likely 56°13° to 60°16°) | 57°14° | 0% | 3 mph5 km/h from NNW, gusts 9 mph14 km/h | 67% | 62% | 2 |
| Sat 2p | Cloudy | 59°15° (likely 56°13° to 61°16°) | 59°15° | 0% | 5 mph8 km/h from NNW, gusts 10 mph17 km/h | 62% | 69% | 2 |
| Sat 3p | Cloudy | 59°15° (likely 56°13° to 60°16°) | 59°15° | 0% | 6 mph10 km/h from NNW, gusts 12 mph20 km/h | 63% | 81% | 2 |
| Sat 4p | Cloudy | 59°15° (likely 55°13° to 59°15°) | 59°15° | 0% | 6 mph10 km/h from NNW, gusts 13 mph22 km/h | 69% | 82% | 1 |
| Sat 5p | Cloudy | 56°13° (likely 53°12° to 57°14°) | 56°13° | 0% | 6 mph10 km/h from NNW, gusts 13 mph21 km/h | 74% | 82% | 1 |
| Sat 6p | Cloudy | 54°12° (likely 51°11° to 55°13°) | 54°12° | 0% | 3 mph5 km/h from NNW, gusts 11 mph18 km/h | 86% | 82% | 0 |
| Sat 7p | Cloudy | 51°11° (likely 49°9° to 52°11°) | 51°11° | 0% | 1 mph2 km/h from NNW, gusts 10 mph16 km/h | 92% | 81% | 0 |
| Sat 8p | Cloudy | 47°8° (likely 47°8° to 50°10°) | 47°8° | 0% | 0 mph0 km/h, gusts 8 mph13 km/h | 94% | 79% | 0 |
| Sat 9p | Cloudy | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 97% | 82% | 0 |
| Sat 10p | Cloudy | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 97% | 83% | 0 |
| Sat 11p | Cloudy | 43°6° (likely 43°6° to 49°9°) | 43°6° | 5% | 0 mph0 km/h, gusts 5 mph7 km/h | 99% | 82% | 0 |
| Sun 12a | Cloudy | 42°6° (likely 42°6° to 48°9°) | 42°6° | 5% | 0 mph0 km/h, gusts 4 mph7 km/h | 100% | 77% | 0 |
| Sun 1a | Cloudy | 41°5° (likely 41°5° to 48°9°) | 41°5° | 5% | 0 mph0 km/h, gusts 6 mph10 km/h | 99% | 73% | 0 |
| Sun 2a | Cloudy | 42°6° (likely 42°6° to 48°9°) | 42°6° | 5% | 0 mph0 km/h, gusts 8 mph13 km/h | 99% | 69% | 0 |
| Sun 3a | Cloudy | 42°6° (likely 42°6° to 49°9°) | 42°6° | 5% | 1 mph2 km/h from SSE, gusts 9 mph15 km/h | 99% | 71% | 0 |
| Sun 4a | Cloudy | 42°6° (likely 42°6° to 49°9°) | 42°6° | 10% | 2 mph3 km/h from SSE, gusts 10 mph17 km/h | 98% | 76% | 0 |
| Sun 5a | Cloudy | 42°6° (likely 42°6° to 50°10°) | 39°4° | 20%, 0.06 in1.5 mm | 5 mph8 km/h from SSE, gusts 12 mph19 km/h | 96% | 67% | 0 |
| Sun 6a | Cloudy | 41°5° (likely 41°5° to 52°11°) | 38°3° | 20%, 0.06 in1.5 mm | 5 mph8 km/h from SSE, gusts 14 mph23 km/h | 95% | 99% | 0 |
| Sun 7a | Cloudy | 44°7° (likely 44°7° to 53°12°) | 41°5° | 20%, 0.06 in1.5 mm | 5 mph8 km/h from SSE, gusts 15 mph25 km/h | 95% | 100% | 0 |
| Sun 8a | Cloudy | 44°7° (likely 44°7° to 53°12°) | 38°3° | 20%, 0.06 in1.5 mm | 10 mph16 km/h from S, gusts 17 mph27 km/h | 96% | 100% | 0 |
| Sun 9a | Cloudy | 47°8° (likely 47°8° to 54°12°) | 42°6° | 30%, 0.06 in1.5 mm | 10 mph16 km/h from S, gusts 19 mph31 km/h | 100% | 100% | 0 |
| Sun 10a | Rain | 52°11° (likely 52°11° to 54°12°) | 52°11° | 50%, 0.06 in1.5 mm | 10 mph16 km/h from S, gusts 21 mph33 km/h | 96% | 100% | 1 |
| Sun 11a | Rain | 56°13° (likely 52°11° to 56°13°) | 56°13° | 70%, 0.25 in6.4 mm | 13 mph21 km/h from S, gusts 21 mph34 km/h | 89% | 100% | 2 |
| Sun 12p | Rain | 57°14° (likely 52°11° to 58°14°) | 57°14° | 80%, 0.25 in6.4 mm | 13 mph21 km/h from S, gusts 24 mph39 km/h | 89% | 100% | 1 |
| Sun 1p | Rain | 57°14° (likely 53°12° to 57°14°) | 57°14° | 80%, 0.25 in6.4 mm | 13 mph21 km/h from S, gusts 28 mph44 km/h | 90% | 98% | 2 |
| Sun 2p | Rain | 58°14° (likely 53°12° to 58°14°) | 58°14° | 70%, 0.25 in6.4 mm | 13 mph21 km/h from SSW, gusts 31 mph50 km/h | 88% | 96% | 1 |
| Sun 3p | Rain | 57°14° (likely 52°11° to 57°14°) | 57°14° | 60%, 0.25 in6.4 mm | 13 mph21 km/h from SSW, gusts 31 mph49 km/h | 91% | 91% | 0 |
| Sun 4p | Rain | 56°13° (likely 53°12° to 56°13°) | 56°13° | 70%, 0.25 in6.4 mm | 13 mph21 km/h from SSW, gusts 32 mph52 km/h | 95% | 73% | 0 |
| Sun 5p | Rain | 54°12° (likely 52°11° to 54°12°) | 54°12° | 90%, 0.14 in3.6 mm | 12 mph19 km/h from SSW, gusts 29 mph47 km/h | 100% | 88% | 0 |
| Sun 6p | Rain | 52°11° (likely 51°11° to 54°12°) | 52°11° | 90%, 0.14 in3.6 mm | 12 mph19 km/h from SSW, gusts 24 mph38 km/h | 100% | 89% | 0 |
| Sun 7p | Rain | 51°11° (likely 51°11° to 53°12°) | 51°11° | 90%, 0.14 in3.6 mm | 12 mph19 km/h from SSW, gusts 22 mph35 km/h | 100% | 92% | 0 |
| Sun 8p | Cloudy | 50°10° (likely 50°10° to 53°12°) | 46°8° | 90%, 0.14 in3.6 mm | 10 mph16 km/h from SSW, gusts 26 mph42 km/h | 100% | 100% | 0 |
| Sun 9p | Rain | 50°10° (likely 50°10° to 53°12°) | 46°8° | 90%, 0.14 in3.6 mm | 10 mph16 km/h from SSW, gusts 27 mph44 km/h | 100% | 100% | 0 |
| Sun 10p | Rain | 49°9° (likely 49°9° to 53°12°) | 45°7° | 90%, 0.14 in3.6 mm | 10 mph16 km/h from SSW, gusts 27 mph44 km/h | 100% | 100% | 0 |
| Sun 11p | Rain | 49°9° (likely 49°9° to 53°12°) | 44°7° | 90%, 0.15 in3.8 mm | 12 mph19 km/h from S, gusts 27 mph43 km/h | 100% | 100% | 0 |
| Mon 12a | Rain | 49°9° (likely 49°9° to 53°12°) | 44°7° | 90%, 0.15 in3.8 mm | 12 mph19 km/h from S, gusts 24 mph39 km/h | 100% | 97% | 0 |
| Mon 1a | Rain | 48°9° (likely 48°9° to 53°12°) | 43°6° | 90%, 0.15 in3.8 mm | 12 mph19 km/h from S, gusts 19 mph31 km/h | 100% | 82% | 0 |
| Mon 2a | Rain | 48°9° (likely 48°9° to 53°12°) | 44°7° | 90%, 0.15 in3.8 mm | 8 mph13 km/h from S, gusts 21 mph34 km/h | 100% | 77% | 0 |
| Mon 3a | Rain | 48°9° (likely 48°9° to 53°12°) | 44°7° | 90%, 0.15 in3.8 mm | 8 mph13 km/h from S, gusts 23 mph37 km/h | 100% | 90% | 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: Patchy fog before 8am. Mostly sunny. High near 60, with temperatures falling to around 56 in the afternoon. Northeast wind 1 to 6 mph.
Tonight: Patchy fog. Partly cloudy, with a low around 38. East northeast wind around 1 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
70% chance · 0.55 in14 mm
Afternoon
noon–6 PM
90% chance · 1.4 in35 mm
Evening
6 PM–midnight
90% chance · 0.85 in22 mm
Overnight
midnight–6 AM
100% chance · 0.74 in19 mm
Official NWS forecast
Day: Rain. Cloudy, with a high near 59. South wind 5 to 13 mph, with gusts as high as 23 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 45. South southwest wind 6 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
100% chance · 0.35 in8.9 mm
Afternoon
noon–6 PM
90% chance · 0.12 in2.9 mm
Evening
6 PM–midnight
70% chance · 0.04 in1 mm
Overnight
midnight–6 AM
60% chance · 0.05 in1.1 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 90%.
Night: A chance of rain before 11pm, then a chance of rain and patchy fog between 11pm and 2am, then areas of fog and a chance of rain. Mostly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance · 0.04 in1 mm
Afternoon
noon–6 PM
40% chance · 0.06 in1.6 mm
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
40% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog and a slight chance of rain before 5pm. Partly sunny, with a high near 59.
Night: A chance of rain after 11pm. Mostly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
50% chance · 0.06 in1.5 mm
Afternoon
noon–6 PM
50% chance · 0.05 in1.1 mm
Evening
6 PM–midnight
50% chance · 0.05 in1.2 mm
Overnight
midnight–6 AM
60% chance · 0.1 in2.5 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 41.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
60% chance · 0.07 in1.8 mm
Afternoon
noon–6 PM
50% chance · 0.12 in3 mm
Evening
6 PM–midnight
40% chance · 0.15 in3.8 mm
Overnight
midnight–6 AM
30% chance · 0.07 in1.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 58.
Night: A slight chance of rain. Mostly cloudy, with a low around 40.
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 58.
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 60°, low 38°.
91% chance of rain, high 59°, low 45°.
87% chance of rain, high 58°, low 43°.
Highs 53–59°; 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 3.3 ft Mon 11 PM
Reading from Sat 3 AM · NWS gauge page
Forecast peak 14.0 ft Tue 2 PM
Reading from Sat 3:30 AM · NWS gauge page
Reading from Sat 2:45 AM · NWS gauge page
Reading from Sat 3:15 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 69% 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 11 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 41°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 2°1° warmer than typical.
Florence weather by month: normals, records, snow and freeze dates
Sunrise 7:42 AM, sunset 6:17 PM.
Clouds most of the night (about 67% cover).
Waxing gibbous
96% lit · growing