Columbia River at St. Helens
14 mi- Level
- 4.3 ft
Forecast peak 5.3 ft Wed 6 PM
Reading from Sat 5:06 PM · NWS gauge page
Appearance
Observed 5:55 PM PDT at KVUO
Sunny and 55°13°, rain tomorrow ~8 AM–7 PM (78%).
Today: low 40°4° (likely 30°−1° to 40°4°), high 55°13°.
Now 55°13°
Sunny
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 6p | Cloudy | 56°13° (likely 50°10° to 56°13°) | 56°13° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 59% | 82% | 0 |
| Sat 7p | Cloudy | 53°12° (likely 47°8° to 53°12°) | 53°12° | 0% | 1 mph2 km/h from E, gusts 3 mph4 km/h | 67% | 82% | 0 |
| Sat 8p | Cloudy | 49°9° (likely 45°7° to 49°9°) | 49°9° | 0% | 1 mph2 km/h from E, gusts 3 mph5 km/h | 72% | 81% | 0 |
| Sat 9p | Cloudy | 48°9° (likely 44°7° to 48°9°) | 48°9° | 0% | 1 mph2 km/h from E, gusts 4 mph6 km/h | 72% | 81% | 0 |
| Sat 10p | Cloudy | 46°8° (likely 43°6° to 46°8°) | 46°8° | 0% | 1 mph2 km/h from E, gusts 4 mph7 km/h | 73% | 81% | 0 |
| Sat 11p | Cloudy | 46°8° (likely 43°6° to 46°8°) | 46°8° | 0% | 2 mph3 km/h from E, gusts 4 mph6 km/h | 72% | 80% | 0 |
| Sun 12a | Cloudy | 46°8° (likely 42°6° to 46°8°) | 46°8° | 0% | 2 mph3 km/h from ESE, gusts 3 mph6 km/h | 69% | 77% | 0 |
| Sun 1a | Cloudy | 45°7° (likely 41°5° to 45°7°) | 44°7° | 0% | 3 mph5 km/h from ESE, gusts 4 mph7 km/h | 70% | 74% | 0 |
| Sun 2a | Cloudy | 44°7° (likely 41°5° to 44°7°) | 41°5° | 5% | 5 mph8 km/h from SE, gusts 5 mph8 km/h | 68% | 72% | 0 |
| Sun 3a | Cloudy | 43°6° (likely 42°6° to 45°7°) | 39°4° | 5% | 6 mph10 km/h from SE, gusts 6 mph10 km/h | 66% | 70% | 0 |
| Sun 4a | Mostly cloudy | 43°6° (likely 42°6° to 44°7°) | 40°4° | 5% | 5 mph8 km/h from SE, gusts 7 mph11 km/h | 66% | 27% | 0 |
| Sun 5a | Cloudy | 43°6° (likely 41°5° to 45°7°) | 40°4° | 20%, 0.09 in2.3 mm | 5 mph8 km/h from SE, gusts 8 mph13 km/h | 68% | 70% | 0 |
| Sun 6a | Rain | 41°5° (likely 41°5° to 46°8°) | 38°3° | 20%, 0.09 in2.3 mm | 5 mph8 km/h from SE, gusts 9 mph14 km/h | 68% | 83% | 0 |
| Sun 7a | Cloudy | 42°6° (likely 42°6° to 47°8°) | 40°4° | 30%, 0.09 in2.3 mm | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 73% | 95% | 0 |
| Sun 8a | Rain | 42°6° (likely 42°6° to 49°9°) | 40°4° | 40%, 0.09 in2.3 mm | 3 mph5 km/h from SE, gusts 8 mph12 km/h | 77% | 97% | 0 |
| Sun 9a | Rain | 42°6° (likely 42°6° to 49°9°) | 40°4° | 50%, 0.09 in2.3 mm | 3 mph5 km/h from ESE, gusts 12 mph19 km/h | 85% | 96% | 0 |
| Sun 10a | Rain | 45°7° (likely 44°7° to 49°9°) | 44°7° | 50%, 0.09 in2.3 mm | 3 mph5 km/h from SE, gusts 10 mph16 km/h | 88% | 99% | 0 |
| Sun 11a | Rain | 48°9° (likely 45°7° to 50°10°) | 47°8° | 60%, 0.12 in3 mm | 3 mph5 km/h from SSE, gusts 13 mph20 km/h | 84% | 100% | 0 |
| Sun 12p | Rain | 50°10° (likely 46°8° to 50°10°) | 49°9° | 60%, 0.12 in3 mm | 3 mph5 km/h from SSE, gusts 12 mph20 km/h | 83% | 100% | 0 |
| Sun 1p | Rain | 53°12° (likely 47°8° to 53°12°) | 53°12° | 50%, 0.12 in3 mm | 3 mph5 km/h from S, gusts 15 mph23 km/h | 80% | 100% | 0 |
| Sun 2p | Rain | 55°13° (likely 48°9° to 55°13°) | 55°13° | 50%, 0.12 in3 mm | 5 mph8 km/h from S, gusts 13 mph21 km/h | 77% | 99% | 0 |
| Sun 3p | Rain | 55°13° (likely 48°9° to 55°13°) | 55°13° | 60%, 0.12 in3 mm | 5 mph8 km/h from S, gusts 14 mph23 km/h | 76% | 98% | 0 |
| Sun 4p | Rain | 56°13° (likely 48°9° to 56°13°) | 56°13° | 60%, 0.12 in3 mm | 5 mph8 km/h from S, gusts 17 mph27 km/h | 78% | 96% | 1 |
| Sun 5p | Rain | 55°13° (likely 48°9° to 55°13°) | 55°13° | 80%, 0.08 in2 mm | 5 mph8 km/h from SSE, gusts 14 mph23 km/h | 77% | 100% | 0 |
| Sun 6p | Drizzle | 55°13° (likely 48°9° to 55°13°) | 55°13° | 60%, 0.08 in2 mm | 5 mph8 km/h from SSE, gusts 15 mph23 km/h | 78% | 99% | 0 |
| Sun 7p | Cloudy | 52°11° (likely 48°9° to 52°11°) | 52°11° | 40%, 0.08 in2 mm | 5 mph8 km/h from SSE, gusts 14 mph23 km/h | 86% | 96% | 0 |
| Sun 8p | Cloudy | 50°10° (likely 49°9° to 50°10°) | 48°9° | 30%, 0.08 in2 mm | 5 mph8 km/h from ESE, gusts 16 mph25 km/h | 89% | 95% | 0 |
| Sun 9p | Drizzle | 50°10° (likely 48°9° to 50°10°) | 48°9° | 20%, 0.08 in2 mm | 5 mph8 km/h from ESE, gusts 17 mph28 km/h | 89% | 93% | 0 |
| Sun 10p | Rain | 49°9° (likely 48°9° to 50°10°) | 47°8° | 20%, 0.08 in2 mm | 5 mph8 km/h from ESE, gusts 17 mph28 km/h | 91% | 92% | 0 |
| Sun 11p | Rain | 49°9° (likely 47°8° to 50°10°) | 46°8° | 70%, 0.07 in1.8 mm | 8 mph13 km/h from SE, gusts 18 mph28 km/h | 90% | 91% | 0 |
| Mon 12a | Rain | 49°9° (likely 47°8° to 50°10°) | 46°8° | 30%, 0.07 in1.8 mm | 8 mph13 km/h from SE, gusts 18 mph30 km/h | 86% | 92% | 0 |
| Mon 1a | Rain | 48°9° (likely 47°8° to 49°9°) | 44°7° | 30%, 0.07 in1.8 mm | 8 mph13 km/h from SE, gusts 16 mph25 km/h | 88% | 97% | 0 |
| Mon 2a | Rain | 47°8° (likely 47°8° to 50°10°) | 43°6° | 80%, 0.07 in1.8 mm | 8 mph13 km/h from SE, gusts 17 mph27 km/h | 88% | 99% | 0 |
| Mon 3a | Rain | 47°8° (likely 47°8° to 50°10°) | 43°6° | 70%, 0.07 in1.8 mm | 8 mph13 km/h from SE, gusts 17 mph27 km/h | 88% | 100% | 0 |
| Mon 4a | Rain | 46°8° (likely 46°8° to 49°9°) | 42°6° | 80%, 0.07 in1.8 mm | 8 mph13 km/h from SE, gusts 17 mph27 km/h | 88% | 100% | 0 |
| Mon 5a | Rain | 45°7° (likely 45°7° to 49°9°) | 41°5° | 80%, 0.12 in3 mm | 7 mph11 km/h from SE, gusts 17 mph28 km/h | 89% | 100% | 0 |
| Mon 6a | Rain | 45°7° (likely 45°7° to 49°9°) | 41°5° | 80%, 0.12 in3 mm | 7 mph11 km/h from SE, gusts 16 mph26 km/h | 90% | 100% | 0 |
| Mon 7a | Rain | 45°7° (likely 45°7° to 49°9°) | 41°5° | 80%, 0.12 in3 mm | 7 mph11 km/h from SE, gusts 19 mph30 km/h | 93% | 100% | 0 |
| Mon 8a | Rain | 45°7° (likely 45°7° to 49°9°) | 42°6° | 80%, 0.12 in3 mm | 6 mph10 km/h from ESE, gusts 18 mph29 km/h | 97% | 100% | 0 |
| Mon 9a | Drizzle | 46°8° (likely 46°8° to 49°9°) | 43°6° | 80%, 0.12 in3 mm | 6 mph10 km/h from ESE, gusts 15 mph23 km/h | 99% | 100% | 0 |
| Mon 10a | Rain | 48°9° (likely 48°9° to 50°10°) | 45°7° | 80%, 0.12 in3 mm | 6 mph10 km/h from ESE, gusts 16 mph25 km/h | 100% | 99% | 0 |
| Mon 11a | Rain | 49°9° (likely 48°9° to 50°10°) | 47°8° | 60%, 0.05 in1.3 mm | 5 mph8 km/h from SSE, gusts 14 mph22 km/h | 100% | 99% | 0 |
| Mon 12p | Rain | 51°11° (likely 48°9° to 51°11°) | 51°11° | 60%, 0.05 in1.3 mm | 5 mph8 km/h from SSE, gusts 8 mph13 km/h | 98% | 99% | 0 |
| Mon 1p | Drizzle | 53°12° (likely 48°9° to 53°12°) | 53°12° | 60%, 0.05 in1.3 mm | 5 mph8 km/h from SSE, gusts 7 mph11 km/h | 95% | 90% | 0 |
| Mon 2p | Drizzle | 55°13° (likely 48°9° to 55°13°) | 55°13° | 60%, 0.05 in1.3 mm | 2 mph3 km/h from SSW, gusts 7 mph12 km/h | 92% | 89% | 0 |
| Mon 3p | Rain | 55°13° (likely 48°9° to 55°13°) | 55°13° | 60%, 0.05 in1.3 mm | 2 mph3 km/h from SSW, gusts 7 mph12 km/h | 90% | 95% | 0 |
| Mon 4p | Drizzle | 55°13° (likely 47°8° to 55°13°) | 55°13° | 60%, 0.05 in1.3 mm | 2 mph3 km/h from SSW, gusts 7 mph11 km/h | 88% | 81% | 0 |
| Mon 5p | Rain | 55°13° (likely 47°8° to 55°13°) | 55°13° | 60%, 0.01 in0.3 mm | 2 mph3 km/h from S, gusts 5 mph9 km/h | 88% | 93% | 0 |
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Tonight: A slight chance of rain after 5am. Mostly cloudy. Low around 40, with temperatures rising to around 43 overnight. East wind 0 to 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
60% chance · 0.57 in14 mm
Afternoon
noon–6 PM
80% chance · 0.68 in17 mm
Evening
6 PM–midnight
70% chance · 0.47 in12 mm
Overnight
midnight–6 AM
80% chance · 0.47 in12 mm
Official NWS forecast
Day: Rain. Mostly cloudy. High near 58, with temperatures falling to around 55 in the afternoon. South southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Night: Rain. Cloudy. Low around 43, with temperatures rising to around 45 overnight. Southeast wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. 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
80% chance · 0.65 in17 mm
Afternoon
noon–6 PM
60% chance · 0.26 in6.6 mm
Evening
6 PM–midnight
60% chance · 0.07 in1.7 mm
Overnight
midnight–6 AM
70% chance · 0.08 in2 mm
Official NWS forecast
Day: Rain. Mostly cloudy, with a high near 57. South southeast wind 2 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: Rain likely before 8pm, then rain likely and areas of fog. Mostly cloudy, with a low around 42. South wind around 2 mph. Chance of precipitation is 70%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
60% chance · 0.06 in1.5 mm
Afternoon
noon–6 PM
60% chance · 0.07 in1.7 mm
Evening
6 PM–midnight
60% chance · 0.06 in1.4 mm
Overnight
midnight–6 AM
70% chance · 0.06 in1.4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain likely and patchy fog. Cloudy, with a high near 56. Chance of precipitation is 70%.
Night: A chance of rain before 8pm, then a chance of rain and patchy fog between 8pm and 10pm, then areas of fog and a chance of rain between 10pm and 11pm, then rain and areas of fog. Mostly cloudy, with a low around 40.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
90% chance · 0.3 in7.7 mm
Afternoon
noon–6 PM
90% chance · 0.21 in5.2 mm
Evening
6 PM–midnight
90% chance · 0.12 in3 mm
Overnight
midnight–6 AM
90% chance · 0.19 in4.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain before 11am, then showers and thunderstorms between 11am and 5pm, then rain. Cloudy, with a high near 53.
Night: Rain. Mostly cloudy, with a low around 38.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
70% chance · 0.24 in6 mm
Afternoon
noon–6 PM
80% chance · 0.17 in4.2 mm
Evening
6 PM–midnight
70% chance · 0.03 in0.7 mm
Overnight
midnight–6 AM
50% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain. Mostly cloudy, with a high near 53.
Night: Rain likely. Mostly cloudy, with a low around 35.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
40% chance · 0.04 in0.9 mm
Afternoon
noon–6 PM
40% chance · 0.09 in2.3 mm
Evening
6 PM–midnight
30% chance · 0.03 in0.8 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 55.
Night: A slight chance of rain before 11pm. Mostly cloudy, with a low around 33.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
20% chance
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
20% chance · 0.16 in4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after 5pm. Partly sunny, with a high near 57.
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
20% chance · 0.03 in0.7 mm
Evening
6 PM–midnight
20% chance · 0.08 in2 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Dry, high 55°, low 40°.
78% chance of rain, high 58°, low 43°, warming up.
80% chance of rain, high 57°, low 42°.
Highs 51–57°; chance of precipitation on Tuesday, Wednesday, Thursday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PQR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 5.3 ft Wed 6 PM
Reading from Sat 5:06 PM · NWS gauge page
Forecast peak 5.1 ft Wed 7 PM
Reading from Sat 5:06 PM · NWS gauge page
Forecast peak 5.4 ft Wed 7 PM
Reading from Sat 5:05 PM · NWS gauge page
Reading from Sat 4 PM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 73% 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 1 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.
Lewisville weather by month: normals, records, snow and freeze dates
Sunrise 7:39 AM, sunset 6:08 PM.
Clouds most of the night (about 75% cover).
Waxing gibbous
98% lit · growing