Mad River near Arcata
4.0 mi- Level
- 5.7 ft
- Flow
- 52 cfs
Forecast peak 5.7 ft Fri 9 AM
Reading from Fri 7:45 AM · NWS gauge page
Appearance
Observed 9:15 AM PDT at KACV
Sunny and 52°11°.
Today: low 37°3° (likely 37°3° to 45°7°), high 60°16° (likely 57°14° to 61°16°).
Now 52°11°
Sunny
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Fri 9a | Fog | 46°8° (likely 46°8° to 48°9°) | 46°8° | 0% | 2 mph3 km/h from W, gusts 5 mph8 km/h | 100% | 23% | 0 |
| Fri 10a | Sunny | 51°11° (likely 51°11° to 53°12°) | 51°11° | 0% | 2 mph3 km/h from W, gusts 7 mph11 km/h | 100% | 12% | 1 |
| Fri 11a | Sunny | 55°13° (likely 54°12° to 56°13°) | 55°13° | 0% | 8 mph13 km/h from WNW, gusts 10 mph16 km/h | 83% | 7% | 2 |
| Fri 12p | Sunny | 56°13° (likely 56°13° to 58°14°) | 56°13° | 0% | 8 mph13 km/h from WNW, gusts 12 mph20 km/h | 80% | 7% | 3 |
| Fri 1p | Sunny | 60°16° (likely 56°13° to 60°16°) | 60°16° | 0% | 8 mph13 km/h from WNW, gusts 15 mph24 km/h | 67% | 2% | 3 |
| Fri 2p | Sunny | 60°16° (likely 57°14° to 61°16°) | 60°16° | 0% | 13 mph21 km/h from NW, gusts 16 mph26 km/h | 62% | 0% | 3 |
| Fri 3p | Sunny | 60°16° (likely 57°14° to 61°16°) | 60°16° | 0% | 13 mph21 km/h from NW, gusts 17 mph27 km/h | 62% | 0% | 3 |
| Fri 4p | Sunny | 60°16° (likely 57°14° to 60°16°) | 60°16° | 0% | 13 mph21 km/h from NW, gusts 17 mph27 km/h | 62% | 0% | 2 |
| Fri 5p | Sunny | 58°14° (likely 56°13° to 58°14°) | 58°14° | 0% | 5 mph8 km/h from NW, gusts 15 mph24 km/h | 69% | 0% | 2 |
| Fri 6p | Clear | 56°13° (likely 53°12° to 56°13°) | 56°13° | 0% | 5 mph8 km/h from NW, gusts 9 mph15 km/h | 77% | 0% | 1 |
| Fri 7p | Clear | 54°12° (likely 50°10° to 54°12°) | 54°12° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 86% | 0% | 0 |
| Fri 8p | Clear | 48°9° (likely 47°8° to 50°10°) | 48°9° | 0% | 2 mph3 km/h from SSE, gusts 3 mph5 km/h | 93% | 0% | 0 |
| Fri 9p | Clear | 46°8° (likely 45°7° to 49°9°) | 46°8° | 0% | 2 mph3 km/h from SSE, gusts 3 mph5 km/h | 93% | 1% | 0 |
| Fri 10p | Clear | 45°7° (likely 44°7° to 49°9°) | 45°7° | 0% | 2 mph3 km/h from SSE, gusts 4 mph6 km/h | 93% | 7% | 0 |
| Fri 11p | Clear | 44°7° (likely 43°6° to 49°9°) | 44°7° | 0% | 1 mph2 km/h from ENE, gusts 4 mph6 km/h | 93% | 12% | 0 |
| Sat 12a | Clear | 43°6° (likely 42°6° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from ENE, gusts 4 mph6 km/h | 89% | 16% | 0 |
| Sat 1a | Clear | 43°6° (likely 41°5° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from ENE, gusts 4 mph7 km/h | 86% | 18% | 0 |
| Sat 2a | Clear | 42°6° (likely 40°4° to 49°9°) | 42°6° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 86% | 15% | 0 |
| Sat 3a | Clear | 41°5° (likely 40°4° to 48°9°) | 41°5° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 79% | 17% | 0 |
| Sat 4a | Mostly clear | 41°5° (likely 39°4° to 49°9°) | 41°5° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 79% | 42% | 0 |
| Sat 5a | Clear | 39°4° (likely 39°4° to 49°9°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 4 mph6 km/h | 76% | 15% | 0 |
| Sat 6a | Mostly clear | 39°4° (likely 39°4° to 49°9°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 4 mph6 km/h | 76% | 19% | 0 |
| Sat 7a | Mostly clear | 39°4° (likely 38°3° to 50°10°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 4 mph6 km/h | 73% | 40% | 0 |
| Sat 8a | Mostly sunny | 38°3° (likely 38°3° to 51°11°) | 38°3° | 0% | 0 mph0 km/h, gusts 3 mph6 km/h | 70% | 55% | 0 |
| Sat 9a | Mostly sunny | 42°6° (likely 42°6° to 51°11°) | 42°6° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 67% | 56% | 1 |
| Sat 10a | Mostly sunny | 51°11° (likely 51°11° to 57°14°) | 51°11° | 0% | 0 mph0 km/h, gusts 5 mph7 km/h | 63% | 55% | 2 |
| Sat 11a | Mostly sunny | 57°14° (likely 57°14° to 62°17°) | 57°14° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 55% | 44% | 3 |
| Sat 12p | Sunny | 60°16° (likely 60°16° to 65°18°) | 60°16° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 53% | 43% | 4 |
| Sat 1p | Sunny | 63°17° (likely 62°17° to 66°19°) | 63°17° | 0% | 5 mph8 km/h from NW, gusts 5 mph9 km/h | 54% | 41% | 4 |
| Sat 2p | Sunny | 64°18° (likely 62°17° to 66°19°) | 64°18° | 0% | 6 mph10 km/h from WNW, gusts 6 mph10 km/h | 52% | 41% | 4 |
| Sat 3p | Sunny | 64°18° (likely 61°16° to 65°18°) | 64°18° | 0% | 6 mph10 km/h from WNW, gusts 6 mph10 km/h | 52% | 41% | 4 |
| Sat 4p | Sunny | 64°18° (likely 59°15° to 64°18°) | 64°18° | 0% | 6 mph10 km/h from WNW, gusts 6 mph9 km/h | 56% | 41% | 3 |
| Sat 5p | Sunny | 60°16° (likely 57°14° to 61°16°) | 60°16° | 0% | 1 mph2 km/h from WNW, gusts 6 mph9 km/h | 64% | 40% | 2 |
| Sat 6p | Partly cloudy | 58°14° (likely 53°12° to 58°14°) | 58°14° | 0% | 1 mph2 km/h from WNW, gusts 5 mph8 km/h | 69% | 27% | 1 |
| Sat 7p | Partly cloudy | 55°13° (likely 49°9° to 55°13°) | 55°13° | 0% | 1 mph2 km/h from WNW, gusts 3 mph5 km/h | 77% | 36% | 0 |
| Sat 8p | Mostly clear | 49°9° (likely 47°8° to 51°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 83% | 50% | 0 |
| Sat 9p | Mostly clear | 48°9° (likely 46°8° to 50°10°) | 48°9° | 0% | 0 mph0 km/h, gusts 3 mph6 km/h | 86% | 60% | 0 |
| Sat 10p | Mostly clear | 47°8° (likely 46°8° to 49°9°) | 47°8° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 86% | 64% | 0 |
| Sat 11p | Partly cloudy | 47°8° (likely 45°7° to 49°9°) | 47°8° | 0% | 2 mph3 km/h from E, gusts 3 mph5 km/h | 86% | 67% | 0 |
| Sun 12a | Partly cloudy | 46°8° (likely 45°7° to 49°9°) | 46°8° | 0% | 2 mph3 km/h from E, gusts 4 mph6 km/h | 86% | 68% | 0 |
| Sun 1a | Partly cloudy | 45°7° (likely 45°7° to 48°9°) | 45°7° | 0% | 2 mph3 km/h from E, gusts 3 mph4 km/h | 89% | 69% | 0 |
| Sun 2a | Partly cloudy | 45°7° (likely 44°7° to 48°9°) | 45°7° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 86% | 72% | 0 |
| Sun 3a | Partly cloudy | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 86% | 74% | 0 |
| Sun 4a | Cloudy | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 0 mph0 km/h, gusts 3 mph6 km/h | 89% | 69% | 0 |
| Sun 5a | Cloudy | 42°6° (likely 42°6° to 48°9°) | 42°6° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 89% | 67% | 0 |
| Sun 6a | Cloudy | 41°5° (likely 41°5° to 50°10°) | 41°5° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 89% | 77% | 0 |
| Sun 7a | Cloudy | 40°4° (likely 40°4° to 49°9°) | 40°4° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 89% | 79% | 0 |
| Sun 8a | Cloudy | 41°5° (likely 41°5° to 50°10°) | 41°5° | 0% | 1 mph2 km/h from ESE, gusts 4 mph6 km/h | 86% | 74% | 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 11am. Sunny, with a high near 60. West northwest wind 2 to 13 mph, with gusts as high as 18 mph.
Tonight: Mostly clear, with a low around 37. East southeast wind 0 to 5 mph.
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
Official NWS forecast
Day: Sunny. High near 65, with temperatures falling to around 60 in the afternoon. West southwest wind 0 to 6 mph.
Night: Partly cloudy, with a low around 40. North northeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
30% chance · 0.02 in0.6 mm
Overnight
midnight–6 AM
60% chance · 0.04 in1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers after 5pm. Mostly sunny, with a high near 63. Southwest wind 0 to 3 mph. Chance of precipitation is 30%.
Night: A chance of rain showers before 11pm, then a chance of rain showers and patchy fog. Mostly cloudy, with a low around 43. South wind 0 to 3 mph. Chance of precipitation is 50%. 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
50% chance · 0.06 in1.4 mm
Afternoon
noon–6 PM
50% chance · 0.03 in0.6 mm
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers and patchy fog before 5pm, then a chance of rain. Partly sunny, with a high near 59. New rainfall amounts less than a tenth of an inch possible.
Night: A chance of rain before 8pm, then a chance of rain and patchy fog between 8pm and 11pm. Mostly cloudy, with a low around 40.
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.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Patchy fog between 8pm and 11pm. Mostly cloudy, with a low around 39.
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: Patchy fog between 8am and 11am. Mostly sunny, with a high near 60.
Night: Patchy fog after 8pm. Mostly cloudy, with a low around 40.
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.
Official NWS forecast
Day: Patchy fog before 11am. Partly sunny, with a high near 60.
Night: Patchy fog between 8pm and 5am, then a slight chance of rain. Mostly cloudy, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
20% chance · 0.02 in0.6 mm
Afternoon
noon–6 PM
20% chance · 0.16 in4 mm
Evening
6 PM–midnight
30% chance · 0.03 in0.8 mm
Overnight
midnight–6 AM
30% 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.
Morning
6 AM–noon
30% chance
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
20% chance · 0.02 in0.5 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.
Morning
6 AM–noon
20% chance · 0.1 in2.4 mm
Afternoon
noon–6 PM
30% chance · 0.05 in1.2 mm
Evening
6 PM–midnight
30% chance · 0.04 in0.9 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 60°, low 37°.
Dry, high 65°, low 40°, warming up.
Dry, high 63°, low 43°.
Highs 59–62°; chance of precipitation on Monday.
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 Fri 9 AM
Reading from Fri 7:45 AM · NWS gauge page
Forecast peak 11.2 ft Fri 10 AM
Reading from Fri 7 AM · NWS gauge page
Forecast peak 0.2 ft Fri 9 AM
Reading from Fri 7:15 AM · NWS gauge page
Reading from Fri 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 5 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 43°F).
Today, 1:00 PM–4:00 PM
Good stretch to open the windows.
Today’s expected high is about typical for the date.
On average 1°0° colder than normal (daily mean temperature).
Blue Lake weather by month: normals, records, snow and freeze dates
Sunrise 7:36 AM, sunset 6:23 PM.
Mostly clear 6:51 PM–4 AM, but the moon is 96% lit and up.
Waxing gibbous
92% lit · growing