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Lake Tapps weather by month

What a typical year looks like in Lake Tapps, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at LANDSBURG, 23 km from Lake Tapps; records cover 1915–2025.

Today’s Lake Tapps forecast

The year at a glance

January: typical high 45.7°F, low 33°F, precipitation 7.99 in. February: typical high 48.9°F, low 32.8°F, precipitation 5.44 in. March: typical high 53.3°F, low 34.7°F, precipitation 6.19 in. April: typical high 58.6°F, low 38.5°F, precipitation 5.55 in. May: typical high 65.9°F, low 43.9°F, precipitation 3.87 in. June: typical high 70.3°F, low 48.2°F, precipitation 3.15 in. July: typical high 77°F, low 51.4°F, precipitation 1.29 in. August: typical high 77.3°F, low 51.5°F, precipitation 1.64 in. September: typical high 70.6°F, low 46.9°F, precipitation 2.83 in. October: typical high 59.5°F, low 41.2°F, precipitation 5.76 in. November: typical high 49.9°F, low 35.7°F, precipitation 8.51 in. December: typical high 44.5°F, low 32.3°F, precipitation 7.46 in.−10°−23°10°−12°30°−1°50°10°70°21°90°32°110°43°46°8°33°1°Jan49°9°33°0°Feb53°12°35°2°Mar59°15°39°4°Apr66°19°44°7°May70°21°48°9°Jun77°25°51°11°Jul77°25°52°11°Aug71°21°47°8°Sep60°15°41°5°Oct50°10°36°2°Nov45°7°32°0°DecPrecipitation
Bars: typical low to high (official normals, 1991–2020) Record high Record low
Precipitation a year
59.7 in1516 mm
Snow a year
Rare
Last spring freeze
Apr 20
First fall freeze
Oct 25
Heating degree days
5,406
Cooling degree days
131

Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 21°−6° (heating, 99%) and 91°33° (cooling, 1%).

Month by month

Lake Tapps in January

Highs average 46°8° and lows 33°1°, with 8 in203 mm of precipitation in a typical January.

Record high
68°20° (1935)
Record low
1°−17° (1950)
Heating degree days
795
Cooling degree days
0

Lake Tapps in February

Highs average 49°9° and lows 33°0°, with 5.4 in138 mm of precipitation in a typical February.

Record high
74°23° (1968)
Record low
0°−18° (1989)
Heating degree days
676
Cooling degree days
0

Lake Tapps in March

Highs average 53°12° and lows 35°2°, with 6.2 in157 mm of precipitation in a typical March.

Record high
84°29° (1928)
Record low
12°−11° (1955)
Heating degree days
651
Cooling degree days
0

Lake Tapps in April

Highs average 59°15° and lows 39°4°, with 5.6 in141 mm of precipitation in a typical April.

Record high
89°32° (2016)
Record low
23°−5° (1935)
Heating degree days
494
Cooling degree days
1

Lake Tapps in May

Highs average 66°19° and lows 44°7°, with 3.9 in98 mm of precipitation in a typical May.

Record high
102°39° (1983)
Record low
25°−4° (1954)
Heating degree days
317
Cooling degree days
4

Lake Tapps in June

Highs average 70°21° and lows 48°9°, with 3.2 in80 mm of precipitation in a typical June.

Record high
112°44° (2021)
Record low
31°−1° (1933)
Heating degree days
187
Cooling degree days
15

Lake Tapps in July

Highs average 77°25° and lows 51°11°, with 1.3 in33 mm of precipitation in a typical July.

Record high
101°38° (1926)
Record low
31°−1° (2023)
Heating degree days
75
Cooling degree days
50

Lake Tapps in August

Highs average 77°25° and lows 52°11°, with 1.6 in42 mm of precipitation in a typical August.

Record high
102°39° (1981)
Record low
29°−2° (1925)
Heating degree days
70
Cooling degree days
51

Lake Tapps in September

Highs average 71°21° and lows 47°8°, with 2.8 in72 mm of precipitation in a typical September.

Record high
97°36° (2006)
Record low
28°−2° (1970)
Heating degree days
197
Cooling degree days
10

Lake Tapps in OctoberThis month

Highs average 60°15° and lows 41°5°, with 5.8 in146 mm of precipitation in a typical October.

Record high
88°31° (2022)
Record low
17°−8° (2006)
Heating degree days
454
Cooling degree days
0

Lake Tapps in November

Highs average 50°10° and lows 36°2°, with 8.5 in216 mm of precipitation in a typical November.

Record high
76°24° (1949)
Record low
4°−16° (1955)
Heating degree days
666
Cooling degree days
0

Lake Tapps in December

Highs average 45°7° and lows 32°0°, with 7.5 in189 mm of precipitation in a typical December.

Record high
72°22° (1937)
Record low
0°−18° (1924)
Heating degree days
824
Cooling degree days
0