Station Overview Station Location
Station Number WA-OK-20 Latitude 48.551951
Station Name Winthrop 5.5 N Longitude -120.190472
County Okanogan Elevation (ft) 2079



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 17 1.24 0.00 31 0.00 6 0.00 25 0 0 0 0.0 0 0
Nov 17 2.69 2.13 30 1.14 7 0.99 23 1 6 0 6.5 3 5
Dec 17 3.51 0.00 31 0.00 0 0.00 31 0 0 0 0.0 0 0
Jan 18 3.20 1.58 15 0.00 2 1.58 13 1 0 1 0.0 0 0
Feb 18 2.09 0.00 4 0.00 4 0.00 0 0 0 1 0.0 0 0
March 18 1.49 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 18 0.82 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 18 1.13 0.01 10 0.01 10 0.00 0 0 1 1 0.0 0 0
June 18 1.22 0.31 30 0.31 30 0.00 0 0 3 1 0.0 0 0
July 18 0.76 0.01 9 0.01 9 0.00 0 0 1 0 0.0 0 0
Aug 18 0.48 0.00 22 0.00 22 0.00 0 0 0 0 0.0 0 0
Sept 18 0.55 0.00 10 0.00 10 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 19.18" 4.04" 192 days 1.47" 100 2.57" 92 days 2 11 days 4 days 6.5" 3 days 5 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2017 0.00
10/2/2017 0.00
10/3/2017 0.00
10/4/2017 0.00
10/5/2017 0.00
10/6/2017 0.00
10/7/2017 **
10/8/2017 **
10/9/2017 **
10/10/2017 **
10/11/2017 **
10/12/2017 **
10/13/2017 **
10/14/2017 **
10/15/2017 **
10/16/2017 **
10/17/2017 **
10/18/2017 **
10/19/2017 **
10/20/2017 **
10/21/2017 **
10/22/2017 **
10/23/2017 **
10/24/2017 **
10/25/2017 **
10/26/2017 **
10/27/2017 **
10/28/2017 **
10/29/2017 **
10/30/2017 **
10/31/2017 **
11/1/2017 **
11/2/2017 **
11/3/2017 **
11/4/2017 **
11/5/2017 **
11/6/2017 **
11/7/2017 **
11/8/2017 **
11/9/2017 **
11/10/2017 **
11/11/2017 **
11/12/2017 **
11/13/2017 **
11/14/2017 **
11/15/2017 **
11/16/2017 **
11/17/2017 **
11/18/2017 **
11/19/2017 0.99
11/20/2017 0.18
11/21/2017 0.29
11/22/2017 0.27
11/23/2017 0.17
11/24/2017 0.12
11/25/2017 0.00
11/26/2017 0.11
11/27/2017 **
11/28/2017 **
11/29/2017 **
11/30/2017 **
12/1/2017 **
12/2/2017 **
12/3/2017 **
12/4/2017 **
12/5/2017 **
12/6/2017 **
12/7/2017 **
12/8/2017 **
12/9/2017 **
12/10/2017 **
12/11/2017 **
12/12/2017 **
12/13/2017 **
12/14/2017 **
12/15/2017 **
12/16/2017 **
12/17/2017 **
12/18/2017 **
12/19/2017 **
12/20/2017 **
12/21/2017 **
12/22/2017 **
12/23/2017 **
12/24/2017 **
12/25/2017 **
12/26/2017 **
12/27/2017 **
12/28/2017 **
12/29/2017 **
12/30/2017 **
12/31/2017 **
Day of YearDaily PrcpMultiday Prcp
1/1/2018 **
1/2/2018 **
1/3/2018 **
1/4/2018 **
1/5/2018 **
1/6/2018 **
1/7/2018 **
1/8/2018 **
1/9/2018 **
1/10/2018 **
1/11/2018 **
1/12/2018 **
1/13/2018 1.58
1/14/2018 0.00
1/15/2018 T
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018 T
2/9/2018 0.00
2/10/2018 0.00
2/11/2018 0.00
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018
5/20/2018
5/21/2018
5/22/2018 0.00
5/23/2018 0.00
5/24/2018 0.01
5/25/2018 T
5/26/2018 0.00
5/27/2018 0.00
5/28/2018 0.00
5/29/2018 0.00
5/30/2018 0.00
5/31/2018 0.00
6/1/2018 0.04
6/2/2018 0.00
6/3/2018 0.00
6/4/2018 0.00
6/5/2018 0.00
6/6/2018 0.00
6/7/2018 0.00
6/8/2018 0.00
6/9/2018 0.15
6/10/2018 0.00
6/11/2018 0.00
6/12/2018 0.00
6/13/2018 0.00
6/14/2018 0.00
6/15/2018 0.00
6/16/2018 0.00
6/17/2018 0.00
6/18/2018 0.00
6/19/2018 0.00
6/20/2018 0.00
6/21/2018 0.00
6/22/2018 0.00
6/23/2018 0.00
6/24/2018 0.00
6/25/2018 0.12
6/26/2018 T
6/27/2018 0.00
6/28/2018 0.00
6/29/2018 0.00
6/30/2018 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.00
7/2/2018 0.00
7/3/2018 0.00
7/4/2018 0.00
7/5/2018 0.00
7/6/2018 0.00
7/7/2018 0.01
7/8/2018 0.00
7/9/2018 0.00
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018
7/24/2018
7/25/2018
7/26/2018
7/27/2018
7/28/2018
7/29/2018
7/30/2018
7/31/2018
8/1/2018 0.00
8/2/2018 0.00
8/3/2018 0.00
8/4/2018 0.00
8/5/2018 0.00
8/6/2018 0.00
8/7/2018 0.00
8/8/2018 0.00
8/9/2018 0.00
8/10/2018 0.00
8/11/2018 0.00
8/12/2018 0.00
8/13/2018 0.00
8/14/2018 0.00
8/15/2018 0.00
8/16/2018 0.00
8/17/2018 0.00
8/18/2018 0.00
8/19/2018
8/20/2018
8/21/2018
8/22/2018
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018 0.00
8/29/2018 0.00
8/30/2018 0.00
8/31/2018 0.00
9/1/2018 0.00
9/2/2018 0.00
9/3/2018 0.00
9/4/2018 0.00
9/5/2018 0.00
9/6/2018 0.00
9/7/2018 0.00
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018 0.00
9/19/2018 0.00
9/20/2018 0.00
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 7:00 AM 0.00 0.0 M M M 41 F and partly cloudy.
10/2/2017 7:00 AM 0.00 0.0 M M M
10/3/2017 7:00 AM 0.00 0.0 M M M
10/4/2017 7:00 AM 0.00 0.0 M M M
10/5/2017 7:00 AM 0.00 0.0 M M M
10/6/2017 7:00 AM 0.00 0.0 M M M
11/20/2017 6:30 AM 0.18 3.0 0.18 3.0 0.18
11/21/2017 5:45 AM 0.29 3.0 0.29 2.5 M Heaviest snow fell at 33 F. Current conditions at 6am: clear and 26 F. Note weather station is linked to Weather Underground. Check under Winthrop, WA 98862. Station ID is under W Chewuch .....24)
11/22/2017 6:40 AM 0.27 T T 1.0 M 33.4 F and drizzling at time of observation. We had about every type of precipitation in the last 24 hours. Freezing rain from 8-9 am, then drizzle/light rain until 11 am. A break, then some sleet at 2pm followed by snow starting at 230 pm.
11/23/2017 6:45 AM 0.17 M M 1.0 M 35.6 F, fog, visibiility about one mile.
11/24/2017 6:50 AM 0.12 M M 0.5 M 33.4 F and partly cloudy. Yesterday's high 41 F. Weather service forecast has been off by 10 F the last 3 days (i.e, it was supposed to be 51 F yesterday)
11/25/2017 7:00 AM 0.00 0.0 M M M 29.5 F and valley fog. First time temp has dropped below 30 F in a week. Temps in very narrow range of 33-39 F for past several days. Snow has melted from valley locations.
11/26/2017 7:00 AM 0.11 0.5 M 0.0 M 32.9 F and "snaining" (fat, viscous snow) at time of observation. About 0.1 inches of snow on ground, hence the rounding to zero.
1/14/2018 7:00 AM 0.00 0.0 M M M
1/15/2018 6:00 AM T M M M M light drizzle occurred around 12 noon.
2/8/2018 7:00 AM T M M M M 36 F and clear.
2/9/2018 7:00 AM 0.00 0.0 M M M 29 F and mostly cloudy. Yesterday's high 55.
2/10/2018 7:00 AM 0.00 0.0 M M M 15 F and clear.
2/11/2018 7:00 AM 0.00 0.0 M M M 17 F and high stratus overcast. Yesterday was a perfect winter day, cloudless all day, high temp was 34 F.
5/22/2018 7:00 AM 0.00 0.0 M M M
5/23/2018 5:20 AM 0.00 0.0 M M M 54 F and smoky, from nearby controlled burn.
5/24/2018 5:55 AM 0.01 M M M M t-storms in area from 4-530 pm 5/23
5/25/2018 7:00 AM T M M M M heavier rain fell just north of Winthrop (1-3 miles north of route 20) around noon, but we only got spritzes of rain at this location. overnight low 50F.
5/26/2018 7:00 AM 0.00 0.0 M M M overnight low 45 F. Clear skies this morning.
5/27/2018 7:00 AM 0.00 0.0 M M M overnight low 48 F, yesterday's high 80 F. winds strong yesterday afternoon and evening (20-25 mph).
5/28/2018 7:00 AM 0.00 0.0 M M M overnight low 50 F, yesterday's high 84 F
5/29/2018 7:00 AM 0.00 0.0 M M M yesterday's high 79 F, winds gusted to 35 mph for several hours in the afternoon. Relative humidity was 10-12%.
5/30/2018 7:00 AM 0.00 0.0 M M M
5/31/2018 7:00 AM 0.00 0.0 M M M 43 F and mostly cloudy
6/1/2018 7:00 AM 0.04 M M M M
6/2/2018 7:00 AM 0.00 0.0 M M M
6/3/2018 7:00 AM 0.00 0.0 M M M
6/4/2018 7:00 AM 0.00 0.0 M M M
6/5/2018 7:00 AM 0.00 0.0 M M M
6/6/2018 7:00 AM 0.00 0.0 M M M
6/7/2018 7:00 AM 0.00 0.0 M M M
6/8/2018 7:00 AM 0.00 0.0 M M M
6/9/2018 7:00 AM 0.15 M M M M
6/10/2018 7:00 AM 0.00 0.0 M M M
6/11/2018 7:00 AM 0.00 0.0 M M M
6/12/2018 7:00 AM 0.00 0.0 M M M
6/13/2018 7:00 AM 0.00 0.0 M M M
6/14/2018 7:00 AM 0.00 0.0 M M M
6/15/2018 7:00 AM 0.00 0.0 M M M
6/16/2018 6:00 AM 0.00 0.0 M M M
6/17/2018 7:00 AM 0.00 0.0 M M M
6/18/2018 7:00 AM 0.00 0.0 M M M
6/19/2018 7:00 AM 0.00 0.0 M M M
6/20/2018 6:45 AM 0.00 0.0 M M M
6/21/2018 7:00 AM 0.00 0.0 M M M
6/22/2018 7:00 AM 0.00 0.0 M M M 61 F and clear.
6/23/2018 7:00 AM 0.00 0.0 M M M 30-35 mph wind gusts and steady 25 mph winds from 6-10 pm. 57 F and scattered clouds.
6/24/2018 7:00 AM 0.00 0.0 M M M yesterday's high was 79 F. This morning's low was 55 F. High of 82 expected today.
6/25/2018 7:00 AM 0.12 M M M M Strongest wind storm of 2018 so far! 50 mph wind gusts and sustained 35 mph winds at 2am, for many minutes. Thunderstorm followed high winds. Power was out for 2 hours and 10 minutes.
6/26/2018 6:45 AM T M M M M
6/27/2018 7:00 AM 0.00 0.0 M M M
6/28/2018 7:00 AM 0.00 0.0 M M M
6/29/2018 7:00 AM 0.00 0.0 M M M
6/30/2018 7:00 AM 0.00 0.0 M M M
7/1/2018 7:00 AM 0.00 0.0 M M M
7/2/2018 7:00 AM 0.00 0.0 M M M
7/3/2018 7:00 AM 0.00 0.0 M M M
7/4/2018 7:00 AM 0.00 0.0 M M M
7/5/2018 7:00 AM 0.00 0.0 M M M
7/6/2018 7:00 AM 0.00 0.0 M M M
7/7/2018 7:00 AM 0.01 M M M M
7/8/2018 7:00 AM 0.00 0.0 M M M
7/9/2018 7:00 AM 0.00 0.0 M M M
8/1/2018 7:00 AM 0.00 0.0 M M M
8/2/2018 7:00 AM 0.00 0.0 M M M
8/3/2018 7:00 AM 0.00 0.0 M M M
8/4/2018 7:00 AM 0.00 0.0 M M M
8/5/2018 7:00 AM 0.00 0.0 M M M
8/6/2018 7:00 AM 0.00 0.0 M M M
8/7/2018 7:00 AM 0.00 0.0 M M M
8/8/2018 5:55 AM 0.00 0.0 M M M smoke from Crescent/Gilbert fire impacting area, poor air quality in much of the Valley. Effects mediated here a bit due to downslope winds at night which push smoke back south. Yesterday's high 96 F.
8/9/2018 6:30 AM 0.00 0.0 M M M Temperature 64 F. Visibility restricted to 2 miles due to Crescent fire smoke. Yesterday's high was 96 F. Some stations in Winthrop and Twisp reached 102 F.
8/10/2018 7:00 AM 0.00 0.0 M M M 70 F and smoky. Visibility limited to less than 2 miles. Yesterday's high was 102 F.
8/11/2018 7:00 AM 0.00 0.0 M M M
8/12/2018 7:00 AM 0.00 0.0 M M M
8/13/2018 7:00 AM 0.00 0.0 M M M warming up again this week, mid 90s expected.
8/14/2018 7:00 AM 0.00 0.0 M M M
8/15/2018 7:00 AM 0.00 0.0 M M M
8/16/2018 7:00 AM 0.00 0.0 M M M
8/17/2018 7:00 AM 0.00 0.0 M M M local air quality still very unhealthy due to smoke. AQI about 200 (anything over 100 is unhealthy).
8/18/2018 7:00 AM 0.00 0.0 M M M 61 F with heavy smoke. hazardous air quality.
8/28/2018 7:00 AM 0.00 0.0 M M M 46 F and smoky. Visibility about one mile.
8/29/2018 6:30 AM 0.00 0.0 M M M 52 F and smoky. Visibility about 3 miles.
8/30/2018 5:55 AM 0.00 0.0 M M M 53 F with NW winds 15 mph. Winds are bringing smoke from McLeod fire into the Valley. Visibility 3 miles.
8/31/2018 7:00 AM 0.00 0.0 M M M
9/1/2018 7:00 AM 0.00 0.0 M M M 58 F.
9/2/2018 7:00 AM 0.00 0.0 M M M
9/3/2018 7:00 AM 0.00 0.0 M M M
9/4/2018 7:00 AM 0.00 0.0 M M M 47 F and clear. Smoke still present from time to time.
9/5/2018 7:00 AM 0.00 0.0 M M M 47 F and clear. High of 80 F expected today.
9/6/2018 6:00 AM 0.00 0.0 M M M 49 F and clear. High of 85 F expected today.
9/7/2018 7:00 AM 0.00 0.0 M M M 56 F and clear. High of 83 F expected.
9/18/2018 7:00 AM 0.00 0.0 M M M
9/19/2018 7:00 AM 0.00 0.0 M M M
9/20/2018 6:55 AM 0.00 0.0 M M M 46 F, winds 0-15 mph from NW, and clear.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/7/2017 11/19/2017 7:00 AM 44 0.99 M M
11/27/2017 1/13/2018 7:00 AM 48 1.58 14.0 M



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground