As of 22:16 PDT

Weather in Grotto, WA

47°

Grotto, Saturday, 10 October, 22:16

Overcast. Feels like 47°. High 54°, low 43°.

Pressure29.91 inHg

Wind1.3 mph E

Humidity98%

Visibility—

Dew point46°

See detailed hourly forecast

Monthly outlook for Grotto, WA: average high 64.6°, average low 44.5°. That is 3.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 8 days and 4.2 inches. The warmest day looks like 24 October (72.7°), the coolest 13 October (32.1°).

64.6°/44.5°

Average high / low

+3.3°

Above normal

3 / 8

Wet days / normal

0.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	64.1°	59.9°	+2.3°
20 October – 29 October	65.5°	55.3°	+5.7°
30 October – 8 November	at normal	50.9°	—

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).

Sun, 1166° / 45°

0.02

66 °

Grotto, Sunday, 11 October

Light rain. High 66°, low 45°.

Pressure29.94 inHg

Wind0.5 mph SW

Humidity48%

Visibility6.2 mi

Dew point33°

Mon, 1266° / 36°

66 °

Grotto, Monday, 12 October

Clear. High 66°, low 36°.

Pressure30.03 inHg

Wind1.3 mph W

Humidity45%

Visibility6.2 mi

Dew point32°

Tue, 1358° / 32°

58 °

Grotto, Tuesday, 13 October

Clear. High 58°, low 32°.

Pressure30.18 inHg

Wind1.3 mph W

Humidity43%

Visibility6.2 mi

Dew point32°

Wed, 1462° / 38°

62 °

Grotto, Wednesday, 14 October

Mostly clear. High 62°, low 38°.

Pressure30.24 inHg

Wind1.5 mph W

Humidity55%

Visibility6.2 mi

Dew point42°

Thu, 1570° / 40°

70 °

Grotto, Thursday, 15 October

Clear. High 70°, low 40°.

Pressure30.33 inHg

Wind5.2 mph E

Humidity58%

Visibility—

Dew point44°

Fri, 1672° / 42°

72 °

Grotto, Friday, 16 October

Mostly clear. High 72°, low 42°.

Pressure30.15 inHg

Wind5.7 mph E

Humidity47%

Visibility—

Dew point40°

Sat, 1767° / 55°

67 °

Grotto, Saturday, 17 October

Overcast. High 67°, low 55°.

Pressure30.18 inHg

Wind4.7 mph E

Humidity51%

Visibility—

Dew point46°

Sun, 1867° / 52°

67 °

Grotto, Sunday, 18 October

Overcast. High 67°, low 52°.

Pressure30.12 inHg

Wind4.8 mph W

Humidity67%

Visibility—

Dew point51°

Mon, 1960° / 48°

0.44

60 °

Grotto, Monday, 19 October

Rain. High 60°, low 48°.

Pressure30.12 inHg

Wind4.1 mph W

Humidity69%

Visibility—

Dew point48°

Tue, 2055° / 44°

0.11

55 °

Grotto, Tuesday, 20 October

Light rain. High 55°, low 44°.

Pressure30.27 inHg

Wind4 mph W

Humidity84%

Visibility—

Dew point47°

Wed, 2163° / 43°

63 °

Grotto, Wednesday, 21 October

Overcast. High 63°, low 43°.

Pressure30.12 inHg

Wind5.2 mph E

Humidity41%

Visibility—

Dew point33°

Thu, 2266° / 46°

66 °

Grotto, Thursday, 22 October

Overcast. High 66°, low 46°.

Pressure30.12 inHg

Wind6.3 mph E

Humidity44%

Visibility—

Dew point37°

Fri, 2372° / 48°

72 °

Grotto, Friday, 23 October

Clear. High 72°, low 48°.

Pressure30.06 inHg

Wind7.5 mph E

Humidity43%

Visibility—

Dew point39°

Sat, 2473° / 51°

73 °

Grotto, Saturday, 24 October

Overcast. High 73°, low 51°.

Pressure30.06 inHg

Wind6.6 mph E

Humidity33%

Visibility—

Dew point37°

Sun, 2564° / 49°

64 °

Grotto, Sunday, 25 October

Overcast. High 64°, low 49°.

Pressure30.12 inHg

Wind5.2 mph W

Humidity53%

Visibility—

Dew point43°

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

Mon, 2654° / 42°

0.39

54 °

Grotto, Monday, 26 October

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.39 in

Chance of precipitation58%

Record high74° (1965)

Record low21° (1970)

Tue, 2754° / 41°

0.3

54 °

Grotto, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.3 in

Chance of precipitation58%

Record high74° (2017)

Record low13° (1971)

Wed, 2853° / 40°

0.35

53 °

Grotto, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.35 in

Chance of precipitation62%

Record high74° (2017)

Record low2° (1971)

Thu, 2953° / 39°

0.27

53 °

Grotto, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.27 in

Chance of precipitation62%

Record high72° (1962)

Record low10° (1971)

Fri, 3052° / 39°

0.37

52 °

Grotto, Friday, 30 October

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.37 in

Chance of precipitation57%

Record high64° (1962)

Record low10° (1972)

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)

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.