As of 00:18 PDT

Weather in Grinnell, WA

41°Current weather

Grinnell, Monday, 12 October, 00:18

Overcast. Feels like 36°. High 51°, low 38°.

Pressure29.88 inHg
Wind8.1 mph NE
Humidity67%
Visibility6.2 mi
Dew point31°

Monthly outlook for Grinnell, WA: average high 56.6°, average low 40.6°. That is 0.3° below the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 16 October (73°), the coolest 13 October (33.8°).

56.6°/40.6°
Average high / low
−0.3°
Below normal
5 / 4
Wet days / normal
1.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October58.1°58.7°-0.3°
22 October – 31 October54.1°53.2°+0.5°
1 November – 10 Novemberat normal48.2°—

October records over 66 years

85.3°2 October 1987All-time high
9.7°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Garfield (5 mi).

Tue, 1356° / 34°0Partly cloudy
56 °Partly cloudy

Grinnell, Tuesday, 13 October

Partly cloudy. High 56°, low 34°.

Pressure30.21 inHg
Wind2.6 mph S
Humidity48%
Visibility6.2 mi
Dew point33°
Wed, 1460° / 34°0Overcast
60 °Overcast

Grinnell, Wednesday, 14 October

Overcast. High 60°, low 34°.

Pressure30.24 inHg
Wind4.5 mph SW
Humidity37%
Visibility6.2 mi
Dew point30°
Thu, 1568° / 36°0Clear
68 °Clear

Grinnell, Thursday, 15 October

Clear. High 68°, low 36°.

Pressure30.42 inHg
Wind4.6 mph E
Humidity36%
Visibility6.2 mi
Dew point36°
Fri, 1673° / 46°0Clear
73 °Clear

Grinnell, Friday, 16 October

Clear. High 73°, low 46°.

Pressure30.24 inHg
Wind9.4 mph SE
Humidity33%
Visibility—
Dew point34°
Sat, 1766° / 48°0Overcast
66 °Overcast

Grinnell, Saturday, 17 October

Overcast. High 66°, low 48°.

Pressure29.97 inHg
Wind17.8 mph SW
Humidity39%
Visibility—
Dew point35°
Sun, 1860° / 48°0Overcast
60 °Overcast

Grinnell, Sunday, 18 October

Overcast. High 60°, low 48°.

Pressure30.06 inHg
Wind13 mph SW
Humidity52%
Visibility—
Dew point38°
Mon, 1954° / 44°0.07Light rain
54 °Light rain

Grinnell, Monday, 19 October

Light rain. High 54°, low 44°.

Pressure29.85 inHg
Wind13.3 mph SW
Humidity47%
Visibility—
Dew point33°
Tue, 2043° / 39°1.38Heavy rain
43 °Heavy rain

Grinnell, Tuesday, 20 October

Heavy rain. High 43°, low 39°.

Pressure29.94 inHg
Wind18.5 mph SW
Humidity96%
Visibility—
Dew point39°
Wed, 2149° / 36°0Partly cloudy
49 °Partly cloudy

Grinnell, Wednesday, 21 October

Partly cloudy. High 49°, low 36°.

Pressure30.24 inHg
Wind9 mph SW
Humidity61%
Visibility—
Dew point31°
Thu, 2259° / 45°0Overcast
59 °Overcast

Grinnell, Thursday, 22 October

Overcast. High 59°, low 45°.

Pressure30.21 inHg
Wind10.1 mph SE
Humidity46%
Visibility—
Dew point33°
Fri, 2357° / 45°0.26Rain
57 °Rain

Grinnell, Friday, 23 October

Rain. High 57°, low 45°.

Pressure29.88 inHg
Wind9.3 mph SW
Humidity50%
Visibility—
Dew point35°
Sat, 2448° / 39°0.05Light rain
48 °Light rain

Grinnell, Saturday, 24 October

Light rain. High 48°, low 39°.

Pressure30.03 inHg
Wind9.8 mph W
Humidity65%
Visibility—
Dew point33°
Sun, 2552° / 38°0Overcast
52 °Overcast

Grinnell, Sunday, 25 October

Overcast. High 52°, low 38°.

Pressure30.09 inHg
Wind5.6 mph E
Humidity53%
Visibility—
Dew point30°
Mon, 2655° / 38°0Mostly clear
55 °Mostly clear

Grinnell, Monday, 26 October

Mostly clear. High 55°, low 38°.

Pressure30.18 inHg
Wind3.8 mph E
Humidity51%
Visibility—
Dew point31°
Tue, 2753° / 40°0Clear
53 °Clear

Grinnell, Tuesday, 27 October

Clear. High 53°, low 40°.

Pressure29.94 inHg
Wind6.2 mph SE
Humidity48%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2852° / 37°0.07Climate normal
52 °Climate normal

Grinnell, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation38%
Record high67° (1987)
Record low20° (2023)
Thu, 2951° / 36°0.1Climate normal
51 °Climate normal

Grinnell, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.1 in
Chance of precipitation35%
Record high69° (1962)
Record low16° (2019)
Fri, 3051° / 36°0.08Climate normal
51 °Climate normal

Grinnell, Friday, 30 October

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.08 in
Chance of precipitation32%
Record high68° (2008)
Record low16° (2019)
Sat, 3150° / 36°0.11Climate normal
50 °Climate normal

Grinnell, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.11 in
Chance of precipitation30%
Record high68° (1988)
Record low16° (1984)
Sun, 0150° / 35°0.12Climate normal
50 °Climate normal

Grinnell, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.12 in
Chance of precipitation43%
Record high68° (1965)
Record low19° (2002)
Mon, 0250° / 35°0.11Climate normal
50 °Climate normal

Grinnell, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.11 in
Chance of precipitation37%
Record high66° (1981)
Record low13° (1973)
Tue, 0350° / 35°0.05Climate normal
50 °Climate normal

Grinnell, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.05 in
Chance of precipitation30%
Record high64° (1965)
Record low13° (1973)
Wed, 0449° / 36°0.14Climate normal
49 °Climate normal

Grinnell, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.14 in
Chance of precipitation48%
Record high65° (1975)
Record low18° (1973)
Thu, 0548° / 35°0.09Climate normal
48 °Climate normal

Grinnell, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation45%
Record high64° (1987)
Record low15° (1973)
Fri, 0648° / 35°0.11Climate normal
48 °Climate normal

Grinnell, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.11 in
Chance of precipitation48%
Record high64° (2012)
Record low21° (1994)
Sat, 0747° / 35°0.15Climate normal
47 °Climate normal

Grinnell, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.15 in
Chance of precipitation45%
Record high67° (1999)
Record low21° (1973)
Sun, 0847° / 34°0.08Climate normal
47 °Climate normal

Grinnell, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.08 in
Chance of precipitation37%
Record high65° (2016)
Record low19° (1986)
Mon, 0947° / 34°0.09Climate normal
47 °Climate normal

Grinnell, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation42%
Record high61° (2016)
Record low16° (1986)
Tue, 1046° / 33°0.07Climate normal
46 °Climate normal

Grinnell, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation38%
Record high65° (2016)
Record low6° (1986)

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 Grinnell, 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 Grinnell, 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.