Spokane, WA

Washington · Records since 1881–2026

☁️ 66°F
Currently in Spokane
As of 11:30 AM PDT

Records for September 11

🔥 Record High

94°F

September 11, 1944

+18° from 76° normal

❄ Record Low

29°F

September 11, 1889

-21° from 50° normal
🌞 Normal high: 76°F 🌑 Normal low: 50°F 1991–2020 normals

All-Time Records — Spokane

🔥
109°F
Hottest Day Ever
Jun 29, 2021
❄
-30°F
Coldest Day Ever
Jan 16, 1888
🌧
2.22"
Wettest Day Ever
Jun 7, 1888
☃
12.7"
Most Snow in One Day
Jan 21, 1954

First & Last Dates — Spokane

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)
234 days
Longest growing season
1940
121 days
Shortest growing season
1960
162 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 94°F September 11, 1944
2 93°F September 11, 2011
3 93°F September 11, 1996
4 92°F September 11, 1953
5 92°F September 11, 1940
6 91°F September 11, 2013
7 90°F September 11, 1990
8 90°F September 11, 1973
9 89°F September 11, 1943
10 89°F September 11, 1899

Top 5 Record Lows — September 11

# Temp Date
🥶 29°F September 11, 1889
2 35°F September 11, 2012
3 36°F September 11, 1970
4 36°F September 11, 1906
5 37°F September 11, 1986
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 1881–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Spokane

threshold: 93°F (90th percentile of historical Jun–Aug highs)
4.3
Avg heat wave length
days (historical)
99°
Avg peak temp
during heat waves
4
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1881–2026
17
2026 so far
20
Avg/year 1970–2025
28
Avg/year (last 10 complete)
42
Most in a year (2021)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Spokane

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 6, 2024 – Jul 22, 2024 17 107°F (Jul 21) 98°F 68°F
2 Jul 13, 1938 – Jul 23, 1938 11 103°F (Jul 22) 99°F 66°F
3 Aug 10, 1967 – Aug 20, 1967 11 101°F (Aug 18) 98°F 62°F
4 Jul 20, 1994 – Jul 29, 1994 10 102°F (Jul 22) 97°F 64°F
5 Jul 27, 2014 – Aug 5, 2014 10 100°F (Jul 29) 96°F 66°F
6 Jun 26, 2015 – Jul 4, 2015 9 105°F (Jun 28) 98°F 68°F
7 Jul 24, 2022 – Aug 1, 2022 9 102°F (Jul 29) 99°F 67°F
8 Jul 27, 1973 – Aug 4, 1973 9 96°F (Jul 29) 95°F 62°F
9 Jul 16, 1936 – Jul 23, 1936 8 103°F (Jul 20) 97°F 61°F
10 Jul 22, 1998 – Jul 29, 1998 8 103°F (Jul 27) 97°F 67°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

56
2026 total
above-normal nights
34.4
Avg / summer
1970–2020
69
Most in a summer
2025

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 (1881–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1881, annual totals have trended -0.02" per decade, about -0.3" 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 Spokane is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

6.88"
2026 YTD
Normal: 10.27"
-3.39"
0.43"
September so far
September normal: 0.58"
-0.15"
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 · Spokane is 3.39" behind the normal pace

Period Review — Jun 12 – Sep 10, 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)
70.2°F
Average temperature
15th-warmest of 146
+2.2°
vs. average
Normal: 68.1°F (1991–2020)
0.51"
Precipitation
4th-driest of 146
-1.20"
vs. average
Normal: 1.71" · 30% of normal

Average Temperature by Year — Jun 12 – Sep 10

1881–2026 · 2026 highlighted · trend +0.14° per decade (warming since 1881)

Precipitation by Year — Jun 12 – Sep 10

1881–2026 · 2026 highlighted · trend -0.08" per decade (drier since 1881)

Warmest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 2021 73.6°F
2 2024 72.9°F
3 2017 72.5°F
4 2025 72.1°F
5 2022 71.8°F
6 2015 71.4°F
7 1958 71.3°F
8 1940 71.2°F
9 1925 71.2°F
10 1998 71.0°F

Coolest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1993 62.6°F
2 1881 62.8°F
3 1964 63.4°F
4 1954 64.0°F
5 1912 64.2°F
6 1899 64.3°F
7 1980 64.5°F
8 1907 64.5°F
9 1948 64.6°F
10 1995 64.7°F

Wettest Jun 12 – Sep 10 on Record

# Year Total
1 1897 6.04"
2 1884 5.60"
3 1978 5.54"
4 1891 4.97"
5 1983 4.86"
6 1927 4.62"
7 1887 4.53"
8 1881 4.46"
9 1987 4.43"
10 1912 4.41"

Driest Jun 12 – Sep 10 on Record

# Year Total
1 1883 0.20"
2 2025 0.28"
3 1925 0.37"
4 2026 0.51"
5 2018 0.51"
6 1967 0.53"
7 1973 0.56"
8 1929 0.57"
9 2024 0.61"
10 2017 0.62"
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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