Mad River near Arcata
9.4 mi- Level
- 5.7 ft
- Flow
- 52 cfs
Forecast peak 5.7 ft Sat 9 AM
Reading from Sat 7:45 AM · NWS gauge page
Appearance
Observed 8:53 AM PDT at KACV
Sunny and 41°5°.
Today: low 39°4° (likely 39°4° to 44°7°), high 60°16° (likely 55°13° to 63°17°).
Now 41°5°
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 9a | Mostly sunny | 44°7° (likely 43°6° to 50°10°) | 44°7° | 0% | 3 mph5 km/h from SSW, gusts 4 mph7 km/h | 75% | 11% | 0 |
| Sat 10a | Sunny | 50°10° (likely 48°9° to 55°13°) | 50°10° | 0% | 3 mph5 km/h from SSW, gusts 3 mph4 km/h | 72% | 5% | 1 |
| Sat 11a | Sunny | 53°12° (likely 52°11° to 59°15°) | 53°12° | 0% | 3 mph5 km/h from WNW, gusts 3 mph5 km/h | 64% | 4% | 2 |
| Sat 12p | Mostly sunny | 54°12° (likely 54°12° to 61°16°) | 54°12° | 0% | 3 mph5 km/h from WNW, gusts 5 mph8 km/h | 67% | 12% | 3 |
| Sat 1p | Mostly sunny | 57°14° (likely 54°12° to 63°17°) | 57°14° | 0% | 3 mph5 km/h from WNW, gusts 9 mph15 km/h | 65% | 11% | 4 |
| Sat 2p | Sunny | 58°14° (likely 54°12° to 63°17°) | 58°14° | 0% | 6 mph10 km/h from NNW, gusts 12 mph19 km/h | 63% | 6% | 3 |
| Sat 3p | Sunny | 58°14° (likely 55°13° to 62°17°) | 58°14° | 0% | 6 mph10 km/h from NNW, gusts 13 mph20 km/h | 69% | 36% | 3 |
| Sat 4p | Sunny | 59°15° (likely 54°12° to 61°16°) | 59°15° | 0% | 6 mph10 km/h from NNW, gusts 12 mph19 km/h | 72% | 42% | 2 |
| Sat 5p | Mostly cloudy | 56°13° (likely 54°12° to 59°15°) | 56°13° | 0% | 6 mph10 km/h from NNW, gusts 11 mph18 km/h | 77% | 44% | 2 |
| Sat 6p | Clear | 55°13° (likely 52°11° to 56°13°) | 55°13° | 0% | 6 mph10 km/h from NNW, gusts 10 mph15 km/h | 81% | 40% | 1 |
| Sat 7p | Clear | 52°11° (likely 50°10° to 53°12°) | 52°11° | 0% | 6 mph10 km/h from NNW, gusts 8 mph13 km/h | 87% | 40% | 0 |
| Sat 8p | Clear | 48°9° (likely 48°9° to 51°11°) | 47°8° | 0% | 5 mph8 km/h from N, gusts 7 mph11 km/h | 92% | 42% | 0 |
| Sat 9p | Clear | 48°9° (likely 47°8° to 50°10°) | 47°8° | 0% | 5 mph8 km/h from N, gusts 7 mph11 km/h | 93% | 42% | 0 |
| Sat 10p | Mostly cloudy | 46°8° (likely 46°8° to 50°10°) | 45°7° | 0% | 5 mph8 km/h from N, gusts 8 mph13 km/h | 95% | 61% | 0 |
| Sat 11p | Mostly cloudy | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 1 mph2 km/h from SE, gusts 8 mph13 km/h | 93% | 68% | 0 |
| Sun 12a | Mostly cloudy | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 1 mph2 km/h from SE, gusts 7 mph12 km/h | 95% | 72% | 0 |
| Sun 1a | Cloudy | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 1 mph2 km/h from SE, gusts 7 mph11 km/h | 94% | 77% | 0 |
| Sun 2a | Cloudy | 43°6° (likely 43°6° to 49°9°) | 43°6° | 0% | 2 mph3 km/h from NE, gusts 7 mph11 km/h | 94% | 81% | 0 |
| Sun 3a | Cloudy | 42°6° (likely 42°6° to 48°9°) | 42°6° | 0% | 2 mph3 km/h from NE, gusts 7 mph11 km/h | 96% | 80% | 0 |
| Sun 4a | Cloudy | 42°6° (likely 42°6° to 48°9°) | 42°6° | 0% | 2 mph3 km/h from NE, gusts 7 mph11 km/h | 96% | 77% | 0 |
| Sun 5a | Mostly cloudy | 41°5° (likely 41°5° to 48°9°) | 39°4° | 0% | 3 mph5 km/h from E, gusts 7 mph12 km/h | 96% | 79% | 0 |
| Sun 6a | Mostly cloudy | 39°4° (likely 39°4° to 47°8°) | 37°3° | 0% | 3 mph5 km/h from E, gusts 7 mph12 km/h | 96% | 79% | 0 |
| Sun 7a | Mostly cloudy | 39°4° (likely 39°4° to 47°8°) | 37°3° | 0% | 3 mph5 km/h from E, gusts 8 mph13 km/h | 96% | 69% | 0 |
| Sun 8a | Cloudy | 40°4° (likely 40°4° to 48°9°) | 38°3° | 0% | 3 mph5 km/h from E, gusts 8 mph13 km/h | 94% | 77% | 0 |
| Sun 9a | Cloudy | 44°7° (likely 44°7° to 50°10°) | 43°6° | 0% | 3 mph5 km/h from E, gusts 4 mph7 km/h | 88% | 82% | 0 |
| Sun 10a | Cloudy | 49°9° (likely 49°9° to 54°12°) | 49°9° | 0% | 3 mph5 km/h from E, gusts 5 mph8 km/h | 81% | 86% | 1 |
| Sun 11a | Cloudy | 54°12° (likely 52°11° to 58°14°) | 54°12° | 0% | 1 mph2 km/h from SSW, gusts 4 mph7 km/h | 75% | 89% | 2 |
| Sun 12p | Cloudy | 57°14° (likely 54°12° to 60°16°) | 57°14° | 0% | 1 mph2 km/h from SSW, gusts 3 mph5 km/h | 72% | 92% | 3 |
| Sun 1p | Cloudy | 58°14° (likely 55°13° to 60°16°) | 58°14° | 0% | 1 mph2 km/h from SSW, gusts 3 mph5 km/h | 70% | 93% | 4 |
| Sun 2p | Cloudy | 59°15° (likely 56°13° to 61°16°) | 59°15° | 0% | 3 mph5 km/h from W, gusts 5 mph8 km/h | 71% | 89% | 4 |
| Sun 3p | Cloudy | 59°15° (likely 56°13° to 60°16°) | 59°15° | 0% | 3 mph5 km/h from W, gusts 6 mph9 km/h | 74% | 88% | 3 |
| Sun 4p | Mostly cloudy | 58°14° (likely 56°13° to 59°15°) | 58°14° | 0% | 3 mph5 km/h from W, gusts 5 mph7 km/h | 78% | 47% | 2 |
| Sun 5p | Sunny | 57°14° (likely 56°13° to 58°14°) | 57°14° | 30% | 2 mph3 km/h from WSW, gusts 6 mph9 km/h | 83% | 43% | 1 |
| Sun 6p | Clear | 55°13° (likely 54°12° to 56°13°) | 55°13° | 30% | 2 mph3 km/h from WSW, gusts 7 mph11 km/h | 88% | 31% | 0 |
| Sun 7p | Clear | 53°12° (likely 52°11° to 54°12°) | 53°12° | 30% | 2 mph3 km/h from WSW, gusts 7 mph11 km/h | 92% | 28% | 0 |
| Sun 8p | Cloudy | 51°11° (likely 50°10° to 53°12°) | 51°11° | 30% | 2 mph3 km/h from S, gusts 9 mph15 km/h | 95% | 62% | 0 |
| Sun 9p | Rain | 50°10° (likely 50°10° to 54°12°) | 50°10° | 30% | 2 mph3 km/h from S, gusts 10 mph16 km/h | 96% | 74% | 0 |
| Sun 10p | Cloudy | 49°9° (likely 49°9° to 54°12°) | 49°9° | 30% | 2 mph3 km/h from S, gusts 12 mph19 km/h | 97% | 85% | 0 |
| Sun 11p | Cloudy | 48°9° (likely 48°9° to 55°13°) | 47°8° | 60%, 0.08 in2 mm | 5 mph8 km/h from SSE, gusts 14 mph22 km/h | 96% | 99% | 0 |
| Mon 12a | Rain | 48°9° (likely 48°9° to 55°13°) | 46°8° | 60%, 0.08 in2 mm | 5 mph8 km/h from SSE, gusts 12 mph19 km/h | 95% | 90% | 0 |
| Mon 1a | Drizzle | 47°8° (likely 47°8° to 54°12°) | 45°7° | 60%, 0.08 in2 mm | 5 mph8 km/h from SSE, gusts 10 mph16 km/h | 94% | 90% | 0 |
| Mon 2a | Rain | 46°8° (likely 46°8° to 53°12°) | 43°6° | 60%, 0.08 in2 mm | 6 mph10 km/h from SSE, gusts 7 mph11 km/h | 94% | 87% | 0 |
| Mon 3a | Rain | 46°8° (likely 46°8° to 52°11°) | 43°6° | 60%, 0.08 in2 mm | 6 mph10 km/h from SSE, gusts 7 mph11 km/h | 95% | 86% | 0 |
| Mon 4a | Rain | 45°7° (likely 45°7° to 52°11°) | 42°6° | 60%, 0.08 in2 mm | 6 mph10 km/h from SSE, gusts 9 mph14 km/h | 96% | 80% | 0 |
| Mon 5a | Clear | 45°7° (likely 45°7° to 52°11°) | 42°6° | 60%, 0.03 in0.8 mm | 6 mph10 km/h from SSE, gusts 7 mph11 km/h | 97% | 39% | 0 |
| Mon 6a | Drizzle | 44°7° (likely 44°7° to 51°11°) | 41°5° | 60%, 0.03 in0.8 mm | 6 mph10 km/h from SSE, gusts 9 mph14 km/h | 99% | 87% | 0 |
| Mon 7a | Drizzle | 44°7° (likely 44°7° to 51°11°) | 40°4° | 60%, 0.03 in0.8 mm | 6 mph10 km/h from SSE, gusts 7 mph11 km/h | 100% | 93% | 0 |
| Mon 8a | Drizzle | 44°7° (likely 44°7° to 52°11°) | 40°4° | 60%, 0.03 in0.8 mm | 7 mph11 km/h from SSE, gusts 8 mph13 km/h | 99% | 96% | 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: Mostly sunny. High near 60, with temperatures falling to around 56 in the afternoon. West northwest wind around 6 mph.
Tonight: Mostly cloudy, with a low around 39. Northeast wind 1 to 6 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
60% chance · 0.08 in2 mm
Overnight
midnight–6 AM
60% chance · 0.43 in11 mm
Official NWS forecast
Day: A chance of rain after 5pm. Mostly cloudy, with a high near 60. South southwest wind around 3 mph. Chance of precipitation is 30%.
Night: Rain likely. Mostly cloudy, with a low around 44. South wind 2 to 6 mph. Chance of precipitation is 60%. 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 · 0.11 in2.9 mm
Afternoon
noon–6 PM
60% chance · 0.06 in1.5 mm
Evening
6 PM–midnight
20% chance
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain likely before 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 59. South wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Night: A chance of showers and thunderstorms before 11pm, then a chance of rain between 11pm and 5am. Mostly cloudy, with a low around 46. Southeast wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
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: Partly sunny, with a high near 54.
Night: Mostly cloudy, with a low around 46.
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: Partly sunny, with a high near 54.
Night: Mostly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
20% chance
Overnight
midnight–6 AM
20% chance
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 55.
Night: A slight chance of rain. Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
20% chance · 0.04 in1.1 mm
Afternoon
noon–6 PM
30% chance · 0.08 in2.1 mm
Evening
6 PM–midnight
30% chance · 0.08 in2.1 mm
Overnight
midnight–6 AM
20% chance
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 chance of rain before 8pm. Mostly cloudy, with a low around 44.
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.
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
20% chance · 0.04 in1 mm
Afternoon
noon–6 PM
30% chance · 0.16 in4 mm
Evening
6 PM–midnight
30% chance · 0.18 in4.6 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 39°.
31% chance of rain, high 60°, low 44°.
59% chance of rain, high 59°, low 46°.
Mostly dry, highs 54–60°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (EKA) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 5.7 ft Sat 9 AM
Reading from Sat 7:45 AM · NWS gauge page
Forecast peak 0.1 ft Sat 9 AM
Reading from Sat 8:15 AM · NWS gauge page
Forecast peak 8.8 ft Mon 8 PM
Reading from Sat 8:15 AM · NWS gauge page
Reading from Sat 7:45 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 63% 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 6 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 about typical for the date.
On average 1°0° colder than normal (daily mean temperature).
Samoa weather by month: normals, records, snow and freeze dates
Sunrise 7:38 AM, sunset 6:23 PM.
Clouds most of the night (about 65% cover).
Waxing gibbous
97% lit · growing