Mad River near Arcata
7.0 mi- Level
- 5.7 ft
- Flow
- 55 cfs
Forecast peak 5.7 ft Tue 2 AM
Reading from Sat 2:45 AM · NWS gauge page
Appearance
Ends in 3 h 48 min
Issued for this forecast zone · National Weather Service Eureka CA
What
Temperatures as low as 35 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 plants from the cold.
Areas: Coastal Del Norte; Northern Coastal Humboldt
See it on weather.gov (opens in a new tab)Observed 4:50 AM PDT at KACV
Clear and 39°4°.
Today: low 38°3° (likely 38°3° to 43°6°), high 60°16° (likely 60°16° to 64°18°).
Now 39°4°
Clear · Feels like 35°2°
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 5a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 4 mph6 km/h | 76% | 8% | 0 |
| Sat 6a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 4 mph7 km/h | 75% | 8% | 0 |
| Sat 7a | Clear | 38°3° (likely 38°3° to 44°7°) | 38°3° | 0% | 1 mph2 km/h from SE, gusts 4 mph7 km/h | 75% | 8% | 0 |
| Sat 8a | Sunny | 38°3° (likely 38°3° to 45°7°) | 38°3° | 0% | 1 mph2 km/h from S, gusts 4 mph6 km/h | 74% | 10% | 0 |
| Sat 9a | Partly sunny | 43°6° (likely 43°6° to 50°10°) | 43°6° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 72% | 26% | 1 |
| Sat 10a | Sunny | 50°10° (likely 50°10° to 56°13°) | 50°10° | 0% | 1 mph2 km/h from S, gusts 4 mph6 km/h | 70% | 3% | 2 |
| Sat 11a | Sunny | 53°12° (likely 53°12° to 60°16°) | 53°12° | 0% | 3 mph5 km/h from NW, gusts 4 mph6 km/h | 66% | 5% | 3 |
| Sat 12p | Sunny | 56°13° (likely 56°13° to 63°17°) | 56°13° | 0% | 3 mph5 km/h from NW, gusts 4 mph7 km/h | 64% | 6% | 4 |
| Sat 1p | Sunny | 58°14° (likely 58°14° to 64°18°) | 58°14° | 0% | 3 mph5 km/h from NW, gusts 5 mph8 km/h | 62% | 41% | 4 |
| Sat 2p | Sunny | 59°15° (likely 59°15° to 63°17°) | 59°15° | 0% | 3 mph5 km/h from W, gusts 5 mph8 km/h | 62% | 41% | 4 |
| Sat 3p | Sunny | 59°15° (likely 59°15° to 62°17°) | 59°15° | 0% | 3 mph5 km/h from W, gusts 6 mph10 km/h | 63% | 41% | 4 |
| Sat 4p | Sunny | 59°15° (likely 57°14° to 61°16°) | 59°15° | 0% | 3 mph5 km/h from W, gusts 7 mph11 km/h | 68% | 39% | 3 |
| Sat 5p | Sunny | 57°14° (likely 56°13° to 58°14°) | 57°14° | 0% | 1 mph2 km/h from NW, gusts 6 mph10 km/h | 75% | 39% | 2 |
| Sat 6p | Clear | 54°12° (likely 52°11° to 55°13°) | 54°12° | 0% | 1 mph2 km/h from NW, gusts 5 mph8 km/h | 80% | 41% | 1 |
| Sat 7p | Clear | 52°11° (likely 49°9° to 52°11°) | 52°11° | 0% | 1 mph2 km/h from NW, gusts 4 mph6 km/h | 83% | 44% | 0 |
| Sat 8p | Mostly cloudy | 49°9° (likely 47°8° to 50°10°) | 49°9° | 0% | 1 mph2 km/h from E, gusts 2 mph4 km/h | 86% | 46% | 0 |
| Sat 9p | Mostly cloudy | 48°9° (likely 46°8° to 49°9°) | 48°9° | 0% | 1 mph2 km/h from E, gusts 4 mph7 km/h | 86% | 58% | 0 |
| Sat 10p | Mostly cloudy | 47°8° (likely 45°7° to 48°9°) | 47°8° | 0% | 1 mph2 km/h from E, gusts 5 mph7 km/h | 87% | 68% | 0 |
| Sat 11p | Mostly cloudy | 46°8° (likely 44°7° to 48°9°) | 46°8° | 0% | 1 mph2 km/h from ESE, gusts 4 mph7 km/h | 86% | 69% | 0 |
| Sun 12a | Mostly cloudy | 45°7° (likely 43°6° to 48°9°) | 45°7° | 0% | 1 mph2 km/h from ESE, gusts 4 mph6 km/h | 86% | 75% | 0 |
| Sun 1a | Cloudy | 44°7° (likely 44°7° to 47°8°) | 44°7° | 0% | 1 mph2 km/h from ESE, gusts 3 mph5 km/h | 86% | 78% | 0 |
| Sun 2a | Cloudy | 43°6° (likely 43°6° to 47°8°) | 43°6° | 0% | 1 mph2 km/h from ESE, gusts 3 mph6 km/h | 88% | 81% | 0 |
| Sun 3a | Cloudy | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 1 mph2 km/h from ESE, gusts 4 mph6 km/h | 88% | 80% | 0 |
| Sun 4a | Cloudy | 41°5° (likely 41°5° to 46°8°) | 41°5° | 0% | 1 mph2 km/h from ESE, gusts 4 mph7 km/h | 88% | 78% | 0 |
| Sun 5a | Cloudy | 41°5° (likely 41°5° to 46°8°) | 41°5° | 0% | 1 mph2 km/h from ESE, gusts 5 mph8 km/h | 88% | 78% | 0 |
| Sun 6a | Cloudy | 39°4° (likely 39°4° to 46°8°) | 39°4° | 0% | 1 mph2 km/h from ESE, gusts 5 mph7 km/h | 88% | 78% | 0 |
| Sun 7a | Cloudy | 39°4° (likely 39°4° to 45°7°) | 39°4° | 0% | 1 mph2 km/h from ESE, gusts 4 mph7 km/h | 88% | 77% | 0 |
| Sun 8a | Cloudy | 40°4° (likely 40°4° to 46°8°) | 40°4° | 0% | 1 mph2 km/h from ESE, gusts 5 mph7 km/h | 88% | 79% | 0 |
| Sun 9a | Cloudy | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 1 mph2 km/h from ESE, gusts 4 mph7 km/h | 86% | 84% | 0 |
| Sun 10a | Cloudy | 48°9° (likely 48°9° to 54°12°) | 48°9° | 0% | 1 mph2 km/h from ESE, gusts 5 mph8 km/h | 84% | 83% | 1 |
| Sun 11a | Cloudy | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 81% | 82% | 2 |
| Sun 12p | Cloudy | 55°13° (likely 54°12° to 59°15°) | 55°13° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 77% | 85% | 3 |
| Sun 1p | Cloudy | 57°14° (likely 55°13° to 60°16°) | 57°14° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 74% | 92% | 4 |
| Sun 2p | Cloudy | 58°14° (likely 56°13° to 60°16°) | 58°14° | 0% | 2 mph3 km/h from W, gusts 6 mph10 km/h | 73% | 97% | 4 |
| Sun 3p | Cloudy | 58°14° (likely 56°13° to 60°16°) | 58°14° | 0% | 2 mph3 km/h from W, gusts 5 mph9 km/h | 75% | 85% | 3 |
| Sun 4p | Mostly cloudy | 57°14° (likely 57°14° to 59°15°) | 57°14° | 0% | 2 mph3 km/h from W, gusts 7 mph12 km/h | 80% | 42% | 2 |
| Sun 5p | Sunny | 56°13° (likely 56°13° to 58°14°) | 56°13° | 30% | 1 mph2 km/h from W, gusts 7 mph12 km/h | 84% | 13% | 1 |
| Sun 6p | Clear | 55°13° (likely 54°12° to 55°13°) | 55°13° | 30% | 1 mph2 km/h from W, gusts 8 mph12 km/h | 87% | 10% | 0 |
| Sun 7p | Rain | 53°12° (likely 51°11° to 53°12°) | 53°12° | 30% | 1 mph2 km/h from W, gusts 11 mph17 km/h | 89% | 45% | 0 |
| Sun 8p | Rain | 52°11° (likely 49°9° to 53°12°) | 52°11° | 30% | 1 mph2 km/h from SSE, gusts 10 mph17 km/h | 90% | 53% | 0 |
| Sun 9p | Mostly clear | 51°11° (likely 49°9° to 51°11°) | 51°11° | 30% | 1 mph2 km/h from SSE, gusts 10 mph16 km/h | 90% | 30% | 0 |
| Sun 10p | Clear | 51°11° (likely 49°9° to 52°11°) | 51°11° | 30% | 1 mph2 km/h from SSE, gusts 11 mph18 km/h | 90% | 37% | 0 |
| Sun 11p | Rain | 50°10° (likely 48°9° to 53°12°) | 49°9° | 60%, 0.08 in2 mm | 3 mph5 km/h from SSE, gusts 13 mph21 km/h | 90% | 74% | 0 |
| Mon 12a | Rain | 49°9° (likely 46°8° to 53°12°) | 48°9° | 60%, 0.08 in2 mm | 3 mph5 km/h from SSE, gusts 9 mph14 km/h | 90% | 68% | 0 |
| Mon 1a | Rain | 48°9° (likely 47°8° to 53°12°) | 47°8° | 60%, 0.08 in2 mm | 3 mph5 km/h from SSE, gusts 9 mph15 km/h | 90% | 88% | 0 |
| Mon 2a | Rain | 47°8° (likely 47°8° to 52°11°) | 46°8° | 60%, 0.08 in2 mm | 3 mph5 km/h from SSE, gusts 8 mph13 km/h | 91% | 83% | 0 |
| Mon 3a | Drizzle | 46°8° (likely 46°8° to 52°11°) | 45°7° | 60%, 0.08 in2 mm | 3 mph5 km/h from SSE, gusts 7 mph11 km/h | 92% | 82% | 0 |
| Mon 4a | Rain | 46°8° (likely 46°8° to 51°11°) | 45°7° | 60%, 0.08 in2 mm | 3 mph5 km/h from SSE, gusts 7 mph11 km/h | 93% | 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: Mostly sunny, with a high near 60. West wind around 3 mph.
Tonight: Partly cloudy, with a low around 38. Southeast wind around 1 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
80% chance · 0.41 in10 mm
Official NWS forecast
Day: A chance of rain after 5pm. Partly sunny, with a high near 59. Southwest wind around 2 mph. Chance of precipitation is 30%.
Night: Rain likely. Mostly cloudy, with a low around 44. South wind around 3 mph. Chance of precipitation is 60%. 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
70% chance · 0.05 in1.3 mm
Afternoon
noon–6 PM
60% chance · 0.04 in0.9 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 11am, then rain likely and patchy fog. Mostly cloudy, with a high near 57. South wind 1 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Night: A chance of rain before 5am. Mostly cloudy, with a low around 42. 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: Patchy fog between 11am and 2pm. Partly sunny, with a high near 56.
Night: Patchy fog after 8pm. Mostly cloudy, with a low around 42.
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 before 11am. Partly sunny, with a high near 57.
Night: Patchy fog after 11pm. Mostly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
20% chance
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 11am, then a slight chance of rain. Partly sunny, with a high near 57.
Night: A slight chance of rain before 2am, then patchy fog and a slight chance of rain. 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
20% chance · 0.08 in2.1 mm
Evening
6 PM–midnight
20% 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 and patchy fog. 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.
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
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 38°.
Dry, high 59°, low 44°.
58% chance of rain, high 57°, low 42°.
Mostly dry, highs 56–60°.
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 Tue 2 AM
Reading from Sat 2:45 AM · NWS gauge page
Forecast peak 0.2 ft Sat 4 AM
Reading from Sat 3:15 AM · NWS gauge page
Forecast peak 8.8 ft Sat 5 AM
Reading from Sat 3:15 AM · NWS gauge page
Forecast peak -0.3 ft Tue 5 AM
Reading from Sat 3:15 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 37°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 0° colder than normal (daily mean temperature).
Indianola weather by month: normals, records, snow and freeze dates
Sunrise 7:37 AM, sunset 6:22 PM.
Clear 5:12–7:09 AM, but the moon is 97% lit and up.
Waxing gibbous
96% lit · growing