Santiam River at Jefferson
0.4 mi- Level
- 2.7 ft
- Flow
- 2,080 cfs
Forecast peak 2.9 ft Mon 11 PM
Reading from Sat 3:30 AM · NWS gauge page
Appearance
Ends in 5 h 1 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 4:40 AM PDT at KSLE
Freeze Warning. 36°2° and clear now.
Today: low 34°1° (likely 30°−1° to 37°3°), high 60°16° (likely 58°14° to 62°17°).
Now 36°2°
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 | 36°2° (likely 32°0° to 39°4°) | 36°2° | 0% | 1 mph2 km/h from NNW, gusts 3 mph5 km/h | 99% | 50% | 0 |
| Sat 5a | Fog | 36°2° (likely 31°−1° to 38°3°) | 36°2° | 0% | 1 mph2 km/h from NNW, gusts 3 mph5 km/h | 99% | 39% | 0 |
| Sat 6a | Fog | 35°2° (likely 31°−1° to 37°3°) | 35°2° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 99% | 75% | 0 |
| Sat 7a | Fog | 34°1° (likely 30°−1° to 37°3°) | 34°1° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 100% | 68% | 0 |
| Sat 8a | Fog | 34°1° (likely 30°−1° to 37°3°) | 34°1° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 100% | 81% | 0 |
| Sat 9a | Fog | 36°2° (likely 33°1° to 40°4°) | 36°2° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 100% | 82% | 0 |
| Sat 10a | Cloudy | 42°6° (likely 42°6° to 44°7°) | 42°6° | 0% | 1 mph2 km/h from N, gusts 5 mph7 km/h | 97% | 82% | 1 |
| Sat 11a | Cloudy | 47°8° (likely 47°8° to 49°9°) | 47°8° | 0% | 2 mph3 km/h from N, gusts 5 mph7 km/h | 85% | 78% | 1 |
| Sat 12p | Cloudy | 51°11° (likely 50°10° to 53°12°) | 51°11° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 74% | 66% | 2 |
| Sat 1p | Cloudy | 56°13° (likely 53°12° to 57°14°) | 56°13° | 0% | 2 mph3 km/h from NNW, gusts 4 mph6 km/h | 64% | 80% | 2 |
| Sat 2p | Cloudy | 58°14° (likely 56°13° to 60°16°) | 58°14° | 0% | 2 mph3 km/h from NNW, gusts 3 mph5 km/h | 57% | 80% | 2 |
| Sat 3p | Cloudy | 59°15° (likely 57°14° to 62°17°) | 59°15° | 0% | 1 mph2 km/h from N, gusts 3 mph6 km/h | 54% | 80% | 2 |
| Sat 4p | Cloudy | 60°16° (likely 58°14° to 62°17°) | 60°16° | 0% | 0 mph0 km/h, gusts 3 mph6 km/h | 50% | 81% | 1 |
| Sat 5p | Cloudy | 59°15° (likely 57°14° to 62°17°) | 59°15° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 52% | 82% | 1 |
| Sat 6p | Cloudy | 57°14° (likely 54°12° to 57°14°) | 57°14° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 57% | 82% | 0 |
| Sat 7p | Cloudy | 54°12° (likely 51°11° to 54°12°) | 54°12° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 63% | 83% | 0 |
| Sat 8p | Cloudy | 50°10° (likely 49°9° to 51°11°) | 50°10° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 68% | 82% | 0 |
| Sat 9p | Cloudy | 48°9° (likely 47°8° to 49°9°) | 48°9° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 73% | 83% | 0 |
| Sat 10p | Cloudy | 46°8° (likely 46°8° to 48°9°) | 46°8° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 78% | 83% | 0 |
| Sat 11p | Cloudy | 45°7° (likely 45°7° to 47°8°) | 45°7° | 0% | 1 mph2 km/h from E, gusts 4 mph6 km/h | 82% | 81% | 0 |
| Sun 12a | Cloudy | 43°6° (likely 43°6° to 45°7°) | 43°6° | 0% | 2 mph3 km/h from SE, gusts 4 mph6 km/h | 85% | 80% | 0 |
| Sun 1a | Cloudy | 42°6° (likely 42°6° to 45°7°) | 42°6° | 0% | 2 mph3 km/h from SE, gusts 4 mph7 km/h | 88% | 78% | 0 |
| Sun 2a | Cloudy | 41°5° (likely 40°4° to 44°7°) | 39°4° | 0% | 3 mph5 km/h from SSE, gusts 5 mph8 km/h | 89% | 76% | 0 |
| Sun 3a | Cloudy | 40°4° (likely 39°4° to 44°7°) | 38°3° | 0% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 89% | 74% | 0 |
| Sun 4a | Cloudy | 39°4° (likely 39°4° to 44°7°) | 37°3° | 0% | 3 mph5 km/h from S, gusts 5 mph9 km/h | 89% | 72% | 0 |
| Sun 5a | Cloudy | 40°4° (likely 39°4° to 45°7°) | 37°3° | 5% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 86% | 73% | 0 |
| Sun 6a | Cloudy | 38°3° (likely 38°3° to 46°8°) | 34°1° | 5% | 5 mph8 km/h from S, gusts 9 mph15 km/h | 85% | 82% | 0 |
| Sun 7a | Cloudy | 39°4° (likely 37°3° to 47°8°) | 36°2° | 5% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 85% | 82% | 0 |
| Sun 8a | Cloudy | 39°4° (likely 36°2° to 48°9°) | 35°2° | 5% | 6 mph10 km/h from S, gusts 7 mph11 km/h | 87% | 72% | 0 |
| Sun 9a | Mostly cloudy | 42°6° (likely 41°5° to 50°10°) | 38°3° | 5% | 6 mph10 km/h from S, gusts 9 mph15 km/h | 87% | 62% | 0 |
| Sun 10a | Rain | 48°9° (likely 48°9° to 53°12°) | 45°7° | 20% | 6 mph10 km/h from S, gusts 16 mph26 km/h | 81% | 81% | 1 |
| Sun 11a | Rain | 52°11° (likely 51°11° to 56°13°) | 52°11° | 20%, 0.22 in5.6 mm | 8 mph13 km/h from S, gusts 18 mph29 km/h | 74% | 98% | 2 |
| Sun 12p | Rain | 55°13° (likely 51°11° to 58°14°) | 55°13° | 40%, 0.22 in5.6 mm | 8 mph13 km/h from S, gusts 18 mph30 km/h | 71% | 100% | 3 |
| Sun 1p | Rain | 58°14° (likely 51°11° to 61°16°) | 58°14° | 60%, 0.22 in5.6 mm | 8 mph13 km/h from S, gusts 17 mph27 km/h | 69% | 100% | 3 |
| Sun 2p | Rain | 59°15° (likely 52°11° to 63°17°) | 59°15° | 70%, 0.22 in5.6 mm | 7 mph11 km/h from S, gusts 15 mph25 km/h | 67% | 70% | 3 |
| Sun 3p | Rain | 59°15° (likely 52°11° to 64°18°) | 59°15° | 70%, 0.22 in5.6 mm | 7 mph11 km/h from S, gusts 13 mph21 km/h | 68% | 64% | 3 |
| Sun 4p | Rain | 60°16° (likely 52°11° to 63°17°) | 60°16° | 60%, 0.22 in5.6 mm | 7 mph11 km/h from S, gusts 13 mph20 km/h | 70% | 62% | 2 |
| Sun 5p | Rain | 59°15° (likely 52°11° to 61°16°) | 59°15° | 70%, 0.07 in1.8 mm | 6 mph10 km/h from S, gusts 13 mph22 km/h | 74% | 54% | 1 |
| Sun 6p | Rain | 58°14° (likely 52°11° to 58°14°) | 58°14° | 70%, 0.07 in1.8 mm | 6 mph10 km/h from S, gusts 14 mph22 km/h | 76% | 51% | 0 |
| Sun 7p | Cloudy | 56°13° (likely 52°11° to 56°13°) | 56°13° | 70%, 0.07 in1.8 mm | 6 mph10 km/h from S, gusts 18 mph28 km/h | 80% | 83% | 0 |
| Sun 8p | Rain | 53°12° (likely 51°11° to 54°12°) | 53°12° | 70%, 0.07 in1.8 mm | 6 mph10 km/h from S, gusts 15 mph25 km/h | 85% | 58% | 0 |
| Sun 9p | Rain | 52°11° (likely 51°11° to 52°11°) | 52°11° | 70%, 0.07 in1.8 mm | 6 mph10 km/h from S, gusts 16 mph25 km/h | 88% | 84% | 0 |
| Sun 10p | Rain | 52°11° (likely 50°10° to 52°11°) | 52°11° | 70%, 0.07 in1.8 mm | 6 mph10 km/h from S, gusts 17 mph27 km/h | 89% | 90% | 0 |
| Sun 11p | Drizzle | 51°11° (likely 50°10° to 52°11°) | 51°11° | 80%, 0.06 in1.5 mm | 9 mph14 km/h from S, gusts 16 mph25 km/h | 90% | 94% | 0 |
| Mon 12a | Rain | 50°10° (likely 48°9° to 52°11°) | 46°8° | 80%, 0.06 in1.5 mm | 9 mph14 km/h from S, gusts 11 mph17 km/h | 91% | 100% | 0 |
| Mon 1a | Rain | 50°10° (likely 49°9° to 52°11°) | 46°8° | 80%, 0.06 in1.5 mm | 9 mph14 km/h from S, gusts 10 mph17 km/h | 92% | 99% | 0 |
| Mon 2a | Rain | 49°9° (likely 49°9° to 52°11°) | 45°7° | 80%, 0.06 in1.5 mm | 9 mph14 km/h from S, gusts 11 mph18 km/h | 92% | 93% | 0 |
| Mon 3a | Rain | 48°9° (likely 48°9° to 52°11°) | 44°7° | 80%, 0.06 in1.5 mm | 9 mph14 km/h from S, gusts 12 mph19 km/h | 92% | 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: Areas of fog before 9am, then areas of fog and patchy frost between 9am and 11am. Partly sunny, with a high near 60. North wind around 2 mph.
Tonight: Patchy frost and patchy fog. Partly cloudy. Low around 34, with temperatures rising to around 36 overnight. North northwest wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
20% chance · 0.22 in5.6 mm
Afternoon
noon–6 PM
70% chance · 1.2 in30 mm
Evening
6 PM–midnight
80% chance · 0.41 in10 mm
Overnight
midnight–6 AM
80% chance · 0.29 in7.3 mm
Official NWS forecast
Day: Rain likely after 10am. Mostly cloudy, with a high near 61. South wind 5 to 8 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 44. South wind 6 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
80% chance · 0.09 in2.3 mm
Afternoon
noon–6 PM
90% chance · 0.13 in3.3 mm
Evening
6 PM–midnight
70% chance · 0.01 in0.3 mm
Overnight
midnight–6 AM
50% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain. Mostly cloudy, with a high near 59. Chance of precipitation is 80%.
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
40% chance · 0.02 in0.5 mm
Afternoon
noon–6 PM
50% chance · 0.04 in1.1 mm
Evening
6 PM–midnight
30% chance · 0.01 in0.4 mm
Overnight
midnight–6 AM
30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight 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 40.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
50% chance · 0.15 in3.8 mm
Afternoon
noon–6 PM
60% chance · 0.07 in1.7 mm
Evening
6 PM–midnight
50% chance · 0.02 in0.5 mm
Overnight
midnight–6 AM
40% chance
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 39.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
50% chance · 0.08 in2.1 mm
Afternoon
noon–6 PM
50% chance · 0.06 in1.4 mm
Evening
6 PM–midnight
40% chance · 0.06 in1.6 mm
Overnight
midnight–6 AM
30% chance · 0.03 in0.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 58.
Night: A slight chance of rain before 11pm. 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
20% chance · 0.07 in1.8 mm
Evening
6 PM–midnight
20% chance · 0.04 in0.9 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. 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
Evening
6 PM–midnight
20% chance
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 34°.
73% chance of rain, high 61°, low 44°.
81% chance of rain, high 59°, low 42°.
Highs 52–60°; 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 2.9 ft Mon 11 PM
Reading from Sat 3:30 AM · NWS gauge page
Forecast peak 3.6 ft Tue 11 PM
Reading from Sat 3:45 AM · NWS gauge page
Forecast peak 3.9 ft Thu 5 AM
Reading from Sat 2:45 AM · NWS gauge page
Forecast peak 2.5 ft Tue 5 AM
Reading from Sat 3:30 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 67% 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 15 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 36°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 2°1° warmer than normal (daily mean temperature).
Jefferson weather by month: normals, records, snow and freeze dates
Sunrise 7:39 AM, sunset 6:12 PM.
Clouds most of the night (about 58% cover).
Waxing gibbous
96% lit · growing