Issaquah, Washington, United States Climate
Weather: 10.33°C/50.59°F, Wind SW at 7.6 km/h, 89% Humidity, 1.15% Chance of rain
Issaquah Climate Summary
Located at an elevation of 32.57 meters (106.86 feet) above sea level, Issaquah has a Mediterranean, warm summer climate (Classification: Csb). The district’s yearly temperature is 12.07ºC (53.73ºF) and it is -0.57% lower than United States’s averages. Issaquah typically receives about 84.4 millimeters (3.32 inches) of precipitation and has 144.73 rainy days (39.65% of the time) annually.
Country | United States |
City | Washington |
Longitude | -122.0326191 |
Latitude | 47.5301011 |
Attitude/Elevation | 32.57m (106.86ft) |
Local time | Monday 03:48 |
Annual high temperature | 15.74ºC (60.33ºF) |
Annual low temperature | 5.0ºC (41.0ºF) |
Average annual precip. | 84.4mm (3.32in) |
Warmest month | August (26.28ºC / 79.3ºF) |
Coldest Month | February (0.3ºC / 32.54ºF) |
Wettest Month | January (137.56mm / 5.42in) |
Driest Month | July (16.24mm / 0.64in) |
Number of days with rainfall (≥ 1.0 mm) | 144.73 days (39.65%) |
Days with no rain | 220.27 days (60.35%) |
Humidity | 78.36% |
Climate Issaquah: Weather By Month
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Nov | Oct | Dec | Year |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Record high °C (°F) | 16.0(60.8) | 18.0(64.4) | 25.0(77.0) | 30.0(86.0) | 31.0(87.8) | 36.0(96.8) | 36.0(96.8) | 37.0(98.6) | 37.0(98.6) | 30.0(86.0) | 21.0(69.8) | 14.0(57.2) | 37.0(98.6) |
Average high °C (°F) | 7.64(45.75) | 8.19(46.74) | 11.03(51.85) | 13.95(57.11) | 19.11(66.4) | 21.53(70.75) | 25.84(78.51) | 26.28(79.3) | 22.52(72.54) | 16.1(60.98) | 9.98(49.96) | 6.77(44.19) | 15.74(60.33) |
Daily mean °C (°F) | 4.48(40.06) | 4.98(40.96) | 7.45(45.41) | 10.41(50.74) | 15.53(59.95) | 18.13(64.63) | 21.82(71.28) | 21.64(70.95) | 17.73(63.91) | 12.09(53.76) | 6.74(44.13) | 3.82(38.88) | 12.07(53.73) |
Average low °C (°F) | 0.84(33.51) | 0.3(32.54) | 1.71(35.08) | 3.28(37.9) | 5.67(42.21) | 7.42(45.36) | 10.12(50.22) | 11.26(52.27) | 9.64(49.35) | 6.28(43.3) | 2.88(37.18) | 0.54(32.97) | 5.0(41.0) |
Record low °C (°F) | -16.0(3.2) | -15.0(5.0) | -5.0(23.0) | -4.0(24.8) | -3.0(26.6) | 0.0(0) | 2.0(35.6) | 2.0(35.6) | 2.0(35.6) | -3.0(26.6) | -14.0(6.8) | -10.0(14.0) | -16.0(3.2) |
Average precipitation mm (inches) | 137.56(5.42) | 111.22(4.38) | 122.95(4.84) | 86.71(3.41) | 49.72(1.96) | 42.98(1.69) | 16.24(0.64) | 21.81(0.86) | 52.95(2.08) | 111.48(4.39) | 129.86(5.11) | 129.35(5.09) | 84.4(3.32) |
Average precipitation days (≥ 1.0 mm) | 16.73 | 14.55 | 17.0 | 14.82 | 10.27 | 10.27 | 3.73 | 4.09 | 9.27 | 13.27 | 16.09 | 14.64 | 12.06 |
Average relative humidity (%) | 84.24 | 84.74 | 82.58 | 80.1 | 75.17 | 74.3 | 69.47 | 70.23 | 73.88 | 78.3 | 82.83 | 84.45 | 78.36 |
Mean monthly sunshine hours | 6.15 | 6.22 | 9.11 | 11.81 | 12.98 | 13.18 | 13.69 | 13.38 | 11.27 | 7.22 | 6.23 | 5.93 | 9.76 |
Climate Graph
The chart below shows the mean monthly temperature and precipitation of Washington in recent years.
Issaquah Temperature by Month
July | 21.82°C | 71.28°F | |
August | 21.64°C | 70.95°F | |
June | 18.13°C | 64.63°F | |
September | 17.73°C | 63.91°F | |
May | 15.53°C | 59.95°F | |
October | 12.09°C | 53.76°F | |
April | 10.41°C | 50.74°F | |
March | 7.45°C | 45.41°F | |
November | 6.74°C | 44.13°F | |
February | 4.98°C | 40.96°F | |
January | 4.48°C | 40.06°F | |
December | 3.82°C | 38.88°F |
Historical Data
Temperature | Max | Average | Min | |
---|---|---|---|---|
Max Temperature | 11.0°C (51.8°F) | 5.11°C (41.2°F) | -1.0°C (30.2°F) | |
Avg Temperature | 8.0°C (46.4°F) | 1.86°C (35.35°F) | -3.0°C (26.6°F) | |
Min Temperature | 5.0°C (41.0°F) | -3.39°C (25.9°F) | -10.0°C (14.0°F) | |
Dew Point | Max | Average | Min | |
Dew Point | 5.0°C (41.0°F) | -1.93°C (28.53°F) | -9.0°C (15.8°F) | |
Precipitation | Max | Average | Min | Sum |
Precipitation | 16.5mm | 0.65in | 3.3mm | 0.13in | 0.0mm | 0in | 92.3mm | 3.63in |
Snowdepth | 6.5mm | 0.26in | 0.78mm | 0.03in | 0.0mm | 0in | 21.8mm | 0.86in |
Wind | Max | Average | Min | |
Wind | 9.0kmh | 5.59mph | 5.96kmh | 3.7mph | 3.0kmh | 1.86mph | |
Gust Wind | 17.0kmh | 10.56mph | 10.5kmh | 6.52mph | 6.0kmh | 3.73mph | |
Sea Level Pressure | Max | Average | Min | |
Sea Level Pressure | 16.5mb | 3.3mb | 0.0mb |
Daily Observations
Time | Temperature | Dew Point | Humidity | Wind Speed | Pressure | Precipitation |
---|---|---|---|---|---|---|
February | ° C | ° F | ° C | ° F | % | Kph | Mph | Hg | Mb | Total (mm/in) |
2019-02-01 | 8 | 46.4 | 5 | 41.0 | 83 | 7 | 4.35 | 29.77 | 1008 | 12.3 | 0.48 |
2019-02-02 | 7 | 44.6 | 5 | 41.0 | 88 | 5 | 3.11 | 29.62 | 1003 | 2.0 | 0.08 |
2019-02-03 | 4 | 39.2 | 1 | 33.8 | 82 | 5 | 3.11 | 29.44 | 997 | 3.7 | 0.15 |
2019-02-04 | -3 | 26.6 | -4 | 24.8 | 92 | 9 | 5.59 | 29.65 | 1004 | 3.9 | 0.15 |
2019-02-05 | -3 | 26.6 | -7 | 19.4 | 85 | 4 | 2.49 | 29.91 | 1013 | 0.0 | 0.0 |
2019-02-06 | -2 | 28.4 | -6 | 21.2 | 85 | 3 | 1.86 | 30.27 | 1025 | 0.0 | 0.0 |
2019-02-07 | -1 | 30.2 | -6 | 21.2 | 82 | 5 | 3.11 | 30.36 | 1028 | 0.0 | 0.0 |
2019-02-08 | 0 | 32.0 | -2 | 28.4 | 89 | 5 | 3.11 | 30.06 | 1018 | 7.6 | 0.3 |
2019-02-09 | -2 | 28.4 | -4 | 24.8 | 89 | 8 | 4.97 | 29.83 | 1010 | 3.5 | 0.14 |
2019-02-10 | -2 | 28.4 | -5 | 23.0 | 89 | 7 | 4.35 | 29.8 | 1009 | 1.9 | 0.07 |
2019-02-11 | 0 | 32.0 | -1 | 30.2 | 97 | 5 | 3.11 | 29.8 | 1009 | 14.8 | 0.58 |
2019-02-12 | 1 | 33.8 | 1 | 33.8 | 99 | 7 | 4.35 | 29.71 | 1006 | 16.5 | 0.65 |
2019-02-13 | 1 | 33.8 | 0 | 32.0 | 98 | 6 | 3.73 | 29.62 | 1003 | 0.8 | 0.03 |
2019-02-14 | 2 | 35.6 | -0 | 32.0 | 95 | 8 | 4.97 | 29.38 | 995 | 3.7 | 0.15 |
2019-02-15 | 4 | 39.2 | 1 | 33.8 | 91 | 7 | 4.35 | 29.62 | 1003 | 0.8 | 0.03 |
2019-02-16 | 3 | 37.4 | 0 | 32.0 | 92 | 6 | 3.73 | 29.85 | 1011 | 0.5 | 0.02 |
2019-02-17 | 2 | 35.6 | -0 | 32.0 | 94 | 5 | 3.11 | 30.18 | 1022 | 0.6 | 0.02 |
2019-02-18 | 3 | 37.4 | -1 | 30.2 | 89 | 4 | 2.49 | 30.36 | 1028 | 0.2 | 0.01 |
2019-02-19 | 4 | 39.2 | 2 | 35.6 | 95 | 6 | 3.73 | 30.09 | 1019 | 10.5 | 0.41 |
2019-02-20 | 2 | 35.6 | 0 | 32.0 | 92 | 5 | 3.11 | 29.88 | 1012 | 0.9 | 0.04 |
2019-02-21 | 3 | 37.4 | -3 | 26.6 | 80 | 5 | 3.11 | 30.15 | 1021 | 0.0 | 0.0 |
2019-02-22 | 3 | 37.4 | -2 | 28.4 | 78 | 8 | 4.97 | 30.0 | 1016 | 3.9 | 0.15 |
2019-02-23 | 4 | 39.2 | 0 | 32.0 | 88 | 8 | 4.97 | 30.12 | 1020 | 3.3 | 0.13 |
2019-02-24 | 3 | 37.4 | -2 | 28.4 | 80 | 5 | 3.11 | 30.0 | 1016 | 0.6 | 0.02 |
2019-02-25 | 2 | 35.6 | -6 | 21.2 | 68 | 6 | 3.73 | 29.91 | 1013 | 0.0 | 0.0 |
2019-02-26 | 1 | 33.8 | -9 | 15.8 | 54 | 7 | 4.35 | 30.12 | 1020 | 0.0 | 0.0 |
2019-02-27 | 4 | 39.2 | -6 | 21.2 | 56 | 7 | 4.35 | 29.97 | 1015 | 0.3 | 0.01 |
2019-02-28 | 4 | 39.2 | -5 | 23.0 | 68 | 4 | 2.49 | 30.12 | 1020 | 0.0 | 0.0 |
Issaquah 11 Year Historical Weather Data
- Issaquah, Washington weather in February 2020
- Issaquah, Washington weather in February 2018
- Issaquah, Washington weather in February 2017
- Issaquah, Washington weather in February 2016
- Issaquah, Washington weather in February 2015
- Issaquah, Washington weather in February 2014
- Issaquah, Washington weather in February 2013
- Issaquah, Washington weather in February 2012
- Issaquah, Washington weather in February 2011
- Issaquah, Washington weather in February 2010
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- Lakeland North 29.20 km ( 18.15 mi)
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- Ballard 31.32 km ( 19.46 mi)
- Lakeland South 34.35 km ( 21.34 mi)
- Bothell West 34.36 km ( 21.35 mi)
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- Mill Creek East 38.89 km ( 24.16 mi)
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- Olympia 85.48 km ( 53.12 mi)
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- Ellensburg 127.06 km ( 78.95 mi)
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