CoCoRaHS Data Explorer

Viewing Station: WA-SN-89 : Arlington 2.1 NW

Sep 30, 2017 - Mar 10, 20263,060 Total Observations

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Observation Data Tables

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Daily Precip69
Multi-day Precip0
Significant Weather0
Hail0
Condition Monitoring0

2026-03-10

9:25 AM

0.31

0.2

39° Mostly clear, light breeze. Woke up to 1/4 inch of snow, none under the trees and melting fast and none left on branches. BP 30.20. AQI 22 pm2.5 nearby. Hi/Lo 50°/34°. The first snow of the season!

2026-03-09

9:15 AM

0.03

39° Low overcast, light breeze. Surfaces wet from recent shower. BP 30.13”. AQI-14 pm2.5. Cloudy and breezy (max 7 mph) yesterday. Hi/Lo 52°/37°.

2026-03-08

9:25 AM

0.51

50° Light rain, light breeze. Puddling. Cloudy yesterday then rain overnight. Hi/Lo 55°/48°.

2026-03-07

9:20 AM

0.91

52° Light rain, light breeze. Steady rain yesterday and overnight with puddling. BP steady at 30.37”. Hi/Lo 52°/45°.

2026-03-06

9:15 AM

0.21

45° Raining and light breeze. Rain began yesterday late afternoon and has continued on and off. There is puddling. BP 30.39”. Hi/Lo 55°/44°.

2026-03-05

9:15 AM

0.56

50° Partly sunny and breezy to 5 mph. Steady rain yesterday and overnight. BP rising to 30.31”. Hi/Lo 50°/45°.

2026-03-04

9:10 AM

0.45

48° Raining, calm. Sprinkles yesterday then rain began overnight. BP 29.88” AQI 8 pm2.5. Hi/Lo 57°/48°. Hooray for the rain!

2026-03-03

9:15 AM

0.00

0.0

54° Low clouds, 5 mph breeze, no dew. BP 30.11. AQI: 23 pm2.5 nearby. Mostly sunny yesterday, Hi/Lo 61°/39°. Nice full moon.

2026-03-02

8:30 AM

0.00

0.0

39° Sunny, light frost, calm. BP 30.18”. AQI-61 pm2.5-Moderate-nearby. Sunny yesterday, Hi/Lo 57°/34°.

2026-03-01

9:20 AM

0.00

0.0

43° Clear sky, heavy dew, calm-light breeze. BP 30.20” AQI-54 pm2.5-Moderate. Mostly sunny yesterday. February was dry-total precip was 2.59 inches, which is 54% of the NOAA normal. We had no snow here this winter. I’m hoping for a wet and cool March.

2026-02-28

9:25 AM

0.03

46° Mostly sunny, light breeze. Surfaces wet from overnight shower (?). BP 30.28” AQI: 22 pm2.5 nearby. Cloudy yesterday Hi/Lo 55°/39°.

2026-02-27

9:10 AM

0.03

48° Low broken clouds, light breeze. Surfaces wet from overnight shower. AQI-10 pm2.5 nearby. BP 30.35”. Cloudy yesterday Hi/Lo 52°/45°.

2026-02-26

9:20 AM

0.00

0.0

48° Overcast, 2-3 mph breeze, light dew. BP 30.31”. AQI 11 pm2.5-good. Mostly cloudy yesterday, Hi/Lo 52°/41°.

2026-02-25

9:15 AM

0.04

43° Low overcast, light breeze. BP rising to 30.20”. Not sure when it rained. Hi/Lo 54°/36°.

2026-02-24

9:20 AM

0.02

37° Mostly clear, light breeze. Surfaces wet. BP 30.04”. AQI-32 pm2.5. Hi/Lo 52°/34°.

2026-02-23

8:15 AM

0.33

46° Low overcast, calm. BP 30.14” AQI 7 pm2.5. Rain began midday yesterday and continued. Hi/Lo 54°/43°.

2026-02-22

9:05 AM

0.17

48° Low overcast, mostly calm. Intermittent rain since yesterday afternoon. BP 29.99” Hi/Lo 48°/41°.

2026-02-21

9:00 AM

0.01

41° Low overcast, calm. BP 30.01”, steady. AQI 17 pm2.5=good. Hi/Lo 43°/32°.

2026-02-20

8:45 AM

0.00

0.0

30° Broken low clouds with cirrus above, calm, heavy frost. AQI-31 pm2.5-good. Hi/Lo 45°/28°

2026-02-19

8:00 AM

0.03

36° Low overcast, calm. Surfaces wet from rain showers on and off since yesterday afternoon. BP 29.86”, rising. Hi/Lo 46°/34°.

2026-02-18

8:55 AM

0.09

37° Low overcast, calm. Surfaces wet from overnight rain. BP 29.69”. Yesterday was partly cloudy. Hi/Lo 50°/36°.

2026-02-17

8:55 AM

0.05

37° Low overcast, light breeze. Surfaces wet from on/off rain since yesterday afternoon. BP 29.48”. AQI 19 pm2.5. Hi/Lo 48°/32°

2026-02-16

8:20 AM

0.00

0.0

37°Low overcast, calm. Heavy dew. BP falling to 29.59”. AQI 25 pm2.5. Mostly clear yesterday, Hi/Lo 50°/32°.

2026-02-15

8:00 AM

0.01

32° Clear and frosty w/ patchy fog, calm. BP 30.12”. AQI 27 pm2.5=good. Hi/Lo 50°/32°.

2026-02-14

9:10 AM

0.69

45° Low clouds, calm. Surfaces wet from rain yesterday and overnight. BP 30.16”. Hi/Lo 48°/43°.

2026-02-13

9:05 AM

48° Just starting to sprinkle, light breeze. BP 30.17”, falling. AQI-21 pm2.5 nearby. Hi/Lo 55°/42°.

2026-02-12

9:05 AM

0.00

0.0

38° Low broken clouds, calm. Surfaces wet from condensation. BP 30.36” AQI-52 pm2.5-moderate. Yesterday’s Hi/Lo 54°/34°.

2026-02-11

8:10 AM

0.00

0.0

36° Clear with cirrus clouds, frosty and calm. BP 30.20”. AQI-42 pm2.5-good. Sunny yesterday, Hi/Lo 57°/32°.

2026-02-10

9:10 AM

0.01

44° Clear with cirrus clouds, calm. Surfaces wet from yesterday’s shower. BP 30.17”. AQI-8 pm2.5-good. Hi/Lo 50°/39°.

2026-02-09

8:55 AM

0.00

0.0

45° Low overcast, light breeze. Some condensation only, I think. BP 30.31”. AQI-11 pm2.5-Good. Yesterday was partly sunny Hi/Lo 52°/43°. The Seahawks won the Super Bowl!

2026-02-08

9:15 AM

0.36

43° Patchy fog with several layers of clouds above, calm. BP 30.23”. Rain yesterday and overnight. Hi/Lo 54°/39°.

2026-02-07

9:10 AM

54° Sprinkling and breezy-gusts to 6 mph. BP 30.14”. AQI-29 pm2.5 Yesterday Hi/Lo 63°/45°.

2026-02-06

9:00 AM

0.00

0.0

45° Clear with cirrus clouds, calm, heavy dew. AQI 52 pm2.5-Moderate. Sunny yesterday, Hi/Lo 59°/39°.

2026-02-05

9:05 AM

0.00

0.0

38° Light fog, calm. Surfaces wet from heavy condensation. BP 30.24”. AQI-26 pm2.5-Good. Partly sunny yesterday, Hi/Lo 63°/36°—Awfully warm…?

2026-02-04

9:00 AM

0.00

0.0

52° Low thin overcast, calm, heavy dew. BP 30.40”. Cloudy yesterday, Hi/Lo 57°/46°.

2026-02-03

9:05 AM

0.05

46° Low clouds, calm. BP rising to 30.40”. AQI-8 pm2.5-Good. Light rain on and off yesterday. Hi/Lo 50°/45°.

2026-02-02

9:15 AM

0.39

48° Light rain, puddling. Mostly calm. BP 30.30” AQI-6=good. Rain yesterday and overnight. Hi/Lo 54°/46° The Pacific Chorus Frogs have started to sing.

2026-02-01

9:15 AM

0.28

50° Raining, light breeze. Puddling. BP 30.10”. AQI-12 pm2.5. Rain on and off yesterday and overnight, Hi/Lo 54°/46°. January was dry-3.78 inches. NOAA normal is 6.82 inches.

2026-01-31

8:20 AM

0.13

50° Light rain, calm. BP 30.27”. AQI 5pm2.5-good. Rain on and off yesterday, Hi/Lo 54°/48°.

2026-01-30

9:20 AM

0.44

50° Light rain, light breeze. BP 30.23”, falling. AQI 16pm2.5-Good. Rain began yesterday afternoon, then on and off. Hi/Lo 55°/48°. Good rain!

2026-01-29

8:30 AM

0.29

50° Low overcast, light breeze. BP steady at 30.33”. AQI 7 pm2.5-Good. Rain fairly steady from noon yesterday. Hi/Lo 54°/48°.

2026-01-28

9:10 AM

0.06

49° Low overcast, light breeze. Rain overnight. AQI 10 pm2.5-Good-after many days of Moderate. BP 30.35”. Hi/Lo 52°/44°. More rain, please.

2026-01-27

8:45 AM

0.00

0.0

37° Thin, high overcast with haze and cirrus clouds. Calm. Light dew and RH 84%. AQI 60 pm2.5=Moderate. Yesterday was mostly cloudy Hi/Lo 45°/34°. It’s been unusually dry, last rain was January 2nd.

2026-01-26

8:40 AM

0.00

0.0

32° Low overcast with some haze, light frost, calm. AQI continues Moderate at 78 pm2.5. Sunny yesterday Hi/Lo 46°/27°.

2026-01-25

8:45 AM

0.00

0.0

27° Clear with cirrus clouds, calm and frosty. Some haze, AQI 70 pm2.5-Moderate-at nearby sensor. AQI has been in Moderate range for most of the past week. Yesterday’s Hi/Lo 45°/25°.

2026-01-24

9:00 AM

0.00

0.0

29° Clear with some haze and cirrus clouds, hard frost. AQI 71 pm2.5-Moderate-nearby. Same weather yesterday Hi/Lo 45°/27°

2026-01-23

8:45 AM

0.00

0.0

30° Clear and frosty with some haze. AQI 69 pm2.5=Moderate. BP 30.35” Mostly sunny yesterday Hi/Lo 45°/28° Stagnant air persisting.

2026-01-22

8:30 AM

0.00

0.0

32° Low thin clouds and cirrus clouds, frosty, calm. AQI 63 pm2.5=Moderate. BP 30.30”. Sunny yesterday, Hi/Lo 48°/30°. I hope this stagnant air clears out soon.

2026-01-21

8:30 AM

0.00

0.0

30° Clear and frosty with cirrus clouds and some haze. Calm. AQI-69=moderate and has been moderate for >24 hrs. BP 30.33”. Clear yesterday. Hi/Lo 46°/28°.

2026-01-20

8:45 AM

0.00

0.0

30° Fog w/ some clearing, haze and cirrus clouds above. Frosty and calm. BP 30.37”, steady. AQI-57-Moderate. Sunny yesterday with AQI in moderate range most of the time. Hi/Lo 52°/30°.

2026-01-19

8:40 AM

0.00

0.0

32° Clear, frosty and calm. BP 30.44”, steady. AQI-69 pm2.5=Moderate. Clear yesterday Hi/Lo 50°/30°.

2026-01-18

8:55 AM

0.00

0.0

32° Mostly clear and frosty with a little fog+haze. Calm. BP 30.43”. AQI-66 pm2.5-Moderate. Sunny yesterday Hi/Lo 52°/30°.

2026-01-17

9:15 AM

0.00

0.0

36° Clear with a little haze and frosty. Calm. BP 30.46”. AQI 64 pm2.5= Moderate. Mostly sunny yesterday, Hi/Lo 52°/34°.

2026-01-16

8:50 AM

0.00

0.0

36° Fog, calm. BP steady 30.54”. AQI 22 pm2.5-Good. Hi/Lo 55°/36°.

2026-01-15

9:00 AM

0.00

0.0

50° Low clouds, breaking up, surfaces wet from condensation. BP 30.62”. AQI 29 pm2.5-good. Partly sunny yesterday, Hi/Lo 57°/49°. Unusually warm.

2026-01-14

9:05 AM

0.00

0.0

45° Low broken clouds, calm. Condensation only on surfaces. BP 30.57”, rising. AQI 12 pm2.5. Yesterday was partly sunny, Hi/Lo 61°/43°. Weirdly warm.

2026-01-13

8:40 AM

0.12

52° Low overcast, calm. Surfaces wet from afternoon showers. BP 30.47”. AQI 9 pm2.5. Gloomy yesterday, Hi/Lo 57°/53°.

2026-01-12

7:45 AM

0.33

52° Low overcast, light breeze. Puddling in the driveway. BP 30.38”, steady. AQI 6 pm2.5=good. Hi/Lo 57°/45°.

2026-01-11

9:00 AM

0.77

46° Light rain, calm. BP 30.41”. AQI 11 pm2.5 nearby. Rain, heavy at times last evening and overnight. Hi/Lo 54°/44°

2026-01-10

9:10 AM

0.00

0.0

43° Low overcast, breaking up to the south, calm. Surfaces wet from condensation. BP 30.44”. AQI 18 pm2.5. Cloudy yesterday, Hi/Lo 48°/43°.

2026-01-09

9:10 AM

0.08

45° Low overcast, calm. BP rising to 30.52”. AQI-7 pm2.5-Good. It has been overcast with light rain, Hi/Lo 45°/39°.

2026-01-08

8:00 AM

0.21

39° Sprinkling, low overcast, calm. BP 30.14”. AQI-11 pm2.5=good. Rain yesterday, Hi/Lo 43°/39°.

2026-01-07

9:00 AM

0.41

41° Overcast, surfaces wet from overnight rain, 2 mph breeze. BP 29.78”, steady. AQI 9 pm2.5=good. Yesterday was rainy with a heavy shower ~ 7pm and windy (gusts to 11 mph at 10:30 am). Hi/Lo 43°/37°. Definitely Winter.

2026-01-06

8:50 AM

0.02

43° Low overcast and breezy with gusts to 7 mph. Rain yesterday afternoon and maybe after dark. BP 29.84. AQI 9 pm2.5-good. Hi/Lo 48°/42°

2026-01-05

9:10 AM

0.17

44° Low clouds, surfaces wet from recent rain. BP 29.91”, rising. RH 99%. AQI 14 pm2.5=good. Showers and breezy yesterday, Hi/Lo 52°/43°.

2026-01-04

9:15 AM

0.35

46° Fine rain, light breeze to 5 mph. BP 29.t0”. AQI-4 pm2.5=good .Rain on and off yesterday afternoon and overnight. Hi/Lo 55°/46°.

2026-01-03

8:40 AM

0.33

48° Raining, light breeze. BP falling to 29.61”. AQI 12 pm2.5=good. Cloudy yesterday, Hi/Lo 50°/45°.

2026-01-02

9:20 AM

0.07

44° Low clouds and patchy fog, calm. Light rain after dark. BP steady at 29.93”. AQI-89 pm2.5-Moderate and has been Moderate or higher >36 hrs. Yesterday was partly sunny Hi/Lo 45°/41°.

2026-01-01

8:45 AM

0.00

0.0

34° Low overcast, calm. Patchy frost. BP falling to 29.92”. AQI-118 pm2.5-Unhealthy for Sensitive Groups-probably due to fireworks. Sunny yesterday, Hi/Lo 50°/32°. December 2025 total 6.87 inches=105% of NOAA normal. 2025 Year total 42.02 inches=80% of NOAA normal. Happy New Year.

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Observation Data Tables