As of 16:13 PDT

Weather in Grotto, WA

72°

Grotto, Thursday, 15 October, 16:13

Clear. Feels like 71°. High 72°, low 45°.

Pressure30.30 inHg

Wind1 mph S

Humidity50%

Visibility6.2 mi

Dew point52°

See detailed hourly forecast

Monthly outlook for Grotto, WA: average high 57.3°, average low 40.6°. That is 0.5° above the climate normal for October. Precipitation is expected on 6 days (about 3.7 inches), against a normal of 9 days and 4.7 inches. The warmest day looks like 16 October (77.8°), the coolest 18 October (28.9°).

57.3°/40.6°

Average high / low

+0.5°

Above normal

6 / 9

Wet days / normal

3.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
15 October – 24 October	58.4°	58.3°	+0.1°
25 October – 3 November	55.3°	52.6°	+1.5°
4 November – 13 November	at normal	49.3°	—

October records over 66 years

88.2°1 October 1987All-time high

2.1°28 October 1971All-time low

Climate normals and records are computed from the nearest reference point — Skykomish (3 mi).

Fri, 1678° / 52°

78 °

Grotto, Friday, 16 October

Overcast. High 78°, low 52°.

Pressure30.21 inHg

Wind4.3 mph E

Humidity40%

Visibility3.4 mi

Dew point39°

Sat, 1761° / 37°

0.42

61 °

Grotto, Saturday, 17 October

Rain. High 61°, low 37°.

Pressure30.27 inHg

Wind6.5 mph NW

Humidity77%

Visibility6.2 mi

Dew point42°

Sun, 1857° / 29°

57 °

Grotto, Sunday, 18 October

Overcast. High 57°, low 29°.

Pressure30.12 inHg

Wind0.7 mph N

Humidity49%

Visibility6.2 mi

Dew point29°

Mon, 1953° / 35°

53 °

Grotto, Monday, 19 October

Overcast. High 53°, low 35°.

Pressure29.88 inHg

Wind2.1 mph W

Humidity56%

Visibility6.2 mi

Dew point33°

Tue, 2054° / 34°

54 °

Grotto, Tuesday, 20 October

Overcast. High 54°, low 34°.

Pressure30.12 inHg

Wind3.1 mph NW

Humidity73%

Visibility—

Dew point37°

Wed, 2161° / 34°

61 °

Grotto, Wednesday, 21 October

Clear. High 61°, low 34°.

Pressure29.94 inHg

Wind4.9 mph W

Humidity63%

Visibility—

Dew point41°

Thu, 2252° / 45°

0.19

52 °

Grotto, Thursday, 22 October

Light rain. High 52°, low 45°.

Pressure30.03 inHg

Wind4 mph W

Humidity62%

Visibility—

Dew point38°

Fri, 2346° / 39°

0.19

46 °

Grotto, Friday, 23 October

Light rain. High 46°, low 39°.

Pressure30.33 inHg

Wind4.2 mph W

Humidity80%

Visibility—

Dew point39°

Sat, 2450° / 39°

50 °

Grotto, Saturday, 24 October

Light rain. High 50°, low 39°.

Pressure30.56 inHg

Wind3.8 mph W

Humidity79%

Visibility—

Dew point40°

Sun, 2550° / 39°

50 °

Grotto, Sunday, 25 October

Light rain. High 50°, low 39°.

Pressure30.47 inHg

Wind3.2 mph E

Humidity68%

Visibility—

Dew point38°

Mon, 2653° / 50°

0.48

53 °

Grotto, Monday, 26 October

Rain. High 53°, low 50°.

Pressure30.18 inHg

Wind4.2 mph W

Humidity98%

Visibility—

Dew point51°

Tue, 2756° / 51°

2.13

56 °

Grotto, Tuesday, 27 October

Heavy rain. High 56°, low 51°.

Pressure29.94 inHg

Wind6.7 mph W

Humidity99%

Visibility—

Dew point51°

Wed, 2853° / 42°

0.33

53 °

Grotto, Wednesday, 28 October

Rain. High 53°, low 42°.

Pressure30.33 inHg

Wind6.4 mph W

Humidity90%

Visibility—

Dew point47°

Thu, 2955° / 39°

55 °

Grotto, Thursday, 29 October

Mostly clear. High 55°, low 39°.

Pressure30.45 inHg

Wind5.2 mph E

Humidity65%

Visibility—

Dew point38°

Fri, 3064° / 41°

64 °

Grotto, Friday, 30 October

Clear. High 64°, low 41°.

Pressure30.21 inHg

Wind6.2 mph E

Humidity48%

Visibility—

Dew point35°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 3152° / 40°

0.42

52 °

Grotto, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°

Average low40°

Average precipitation0.42 in

Chance of precipitation68%

Record high67° (1962)

Record low24° (1995)

Sun, 0152° / 39°

0.39

52 °

Grotto, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.39 in

Chance of precipitation60%

Record high69° (1962)

Record low26° (1995)

Mon, 0252° / 39°

0.31

52 °

Grotto, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.31 in

Chance of precipitation58%

Record high72° (2020)

Record low15° (1973)

Tue, 0351° / 39°

0.35

51 °

Grotto, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°

Average low39°

Average precipitation0.35 in

Chance of precipitation60%

Record high68° (1962)

Record low12° (1973)

Wed, 0452° / 40°

0.52

52 °

Grotto, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°

Average low40°

Average precipitation0.52 in

Chance of precipitation63%

Record high67° (1976)

Record low24° (1968)

Thu, 0551° / 39°

0.33

51 °

Grotto, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°

Average low39°

Average precipitation0.33 in

Chance of precipitation65%

Record high64° (1980)

Record low11° (1971)

Fri, 0649° / 39°

0.44

49 °

Grotto, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.44 in

Chance of precipitation65%

Record high65° (2012)

Record low24° (1971)

Sat, 0749° / 39°

0.44

49 °

Grotto, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.44 in

Chance of precipitation70%

Record high62° (2019)

Record low17° (2017)

Sun, 0850° / 38°

0.32

50 °

Grotto, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°

Average low38°

Average precipitation0.32 in

Chance of precipitation58%

Record high67° (2016)

Record low22° (2022)

Mon, 0949° / 38°

0.34

49 °

Grotto, Monday, 9 November

Climate normal for this date — 60-year average.

Average high49°

Average low38°

Average precipitation0.34 in

Chance of precipitation72%

Record high65° (2025)

Record low14° (1982)

Tue, 1048° / 37°

0.31

48 °

Grotto, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.31 in

Chance of precipitation58%

Record high64° (2016)

Record low13° (1986)

Wed, 1149° / 37°

0.38

49 °

Grotto, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.38 in

Chance of precipitation65%

Record high64° (2016)

Record low7° (1985)

Thu, 1248° / 37°

0.44

48 °

Grotto, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.44 in

Chance of precipitation68%

Record high59° (1990)

Record low9° (1985)

Fri, 1348° / 37°

0.47

48 °

Grotto, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.47 in

Chance of precipitation67%

Record high63° (2018)

Record low12° (1978)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grotto, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Grotto, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.