Omak, WA

Washington · Records since 1909–2026

☁️ 71°F Feels like 63°
Currently in Omak
As of 11:30 AM PDT

Records for September 11

🔥 Record High

98°F

September 11, 2011

+18° from 80° normal

❄ Record Low

33°F

September 11, 2014

-17° from 50° normal
🌞 Normal high: 80°F 🌑 Normal low: 50°F 1991–2020 normals

All-Time Records — Omak

🔥
117°F
Hottest Day Ever
Jun 29, 2021
❄
-26°F
Coldest Day Ever
Feb 1, 1950
🌧
2.21"
Wettest Day Ever
Jun 2, 1936
☃
14.0"
Most Snow in One Day
Feb 13, 1938

First & Last Dates — Omak

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
198 days
Longest growing season
2016
80 days
Shortest growing season
1925
146 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 98°F September 11, 2011
2 97°F September 11, 1940
3 94°F September 11, 1993
4 94°F September 11, 1987
5 93°F September 11, 2013
6 93°F September 11, 1990
7 93°F September 11, 1922
8 93°F September 11, 1918
9 92°F September 11, 2020
10 91°F September 11, 2015

Top 5 Record Lows — September 11

# Temp Date
🥶 33°F September 11, 2014
2 35°F September 11, 1913
3 36°F September 11, 1947
4 36°F September 11, 1945
5 37°F September 11, 1910
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1909–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Omak

threshold: 98°F (90th percentile of historical Jun–Aug highs)
4.6
Avg heat wave length
days (historical)
104°
Avg peak temp
during heat waves
3
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1909–2026
46
2026 so far
37
Avg/year 1970–2025
49
Avg/year (last 10 complete)
81
Most in a year (1922)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Omak

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 16, 1927 – Jul 31, 1927 16 110°F (Jul 23) 103°F 61°F
2 Jul 7, 2024 – Jul 22, 2024 16 108°F (Jul 10) 103°F 66°F
3 Aug 4, 1920 – Aug 16, 1920 13 107°F (Aug 8) 103°F 59°F
4 Jun 25, 2021 – Jul 6, 2021 12 117°F (Jun 29) 104°F 71°F
5 Jul 13, 1938 – Jul 23, 1938 11 105°F (Jul 21) 102°F 64°F
6 Aug 6, 1981 – Aug 16, 1981 11 105°F (Aug 8) 103°F 64°F
7 Jul 22, 1928 – Jul 31, 1928 10 114°F (Jul 26) 108°F 60°F
8 Jul 24, 2022 – Aug 1, 2022 9 109°F (Jul 28) 105°F 65°F
9 Jul 28, 2014 – Aug 5, 2014 9 105°F (Jul 29) 101°F 66°F
10 Aug 2, 1927 – Aug 10, 1927 9 104°F (Aug 7) 102°F 55°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

54
2026 total
above-normal nights
37.2
Avg / summer
1970–2020
63
Most in a summer
2023

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1909–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1909, annual totals have trended +0.04" per decade, about +0.4" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Omak is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

158 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

3.45"
2026 YTD
Normal: 7.20"
-3.75"
0.08"
September so far
September normal: 0.40"
-0.32"
0
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Omak is 3.75" behind the normal pace

Period Review — Sep 1 – Nov 30, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
2026 is still under way for this window — totals and rankings appear once November 30 passes.

Average Temperature by Year — Sep 1 – Nov 30

1911–2025 · 2026 highlighted · trend +0.08° per decade (warming since 1911)

Precipitation by Year — Sep 1 – Nov 30

1909–2025 · 2026 highlighted · trend -0.01" per decade (drier since 1909)

About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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