As of 10:56 CDT

Weather in Grinnell, KS

76°

Grinnell, Sunday, 11 October, 10:56

Mostly clear. Feels like 75°. High 88°, low 63°.

Pressure29.71 inHg

Wind12.4 mph SW

Humidity50%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Monthly outlook for Grinnell, KS: average high 71.8°, average low 51.8°. That is 2.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 12 October (89.6°), the coolest 17 October (35.7°).

71.8°/51.8°

Average high / low

+2.9°

Above normal

2 / 2

Wet days / normal

0.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
11 October – 20 October	70.2°	67.8°	+1.3°
21 October – 30 October	74.5°	63.1°	+6.3°
31 October – 9 November	at normal	57.8°	—

October records over 66 years

93.7°5 October 2007All-time high

7.3°27 October 1997All-time low

Climate normals and records are computed from the nearest reference point — Grainfield (9 mi).

Mon, 1290° / 66°

90 °

Grinnell, Monday, 12 October

Clear. High 90°, low 66°.

Pressure29.71 inHg

Wind12.9 mph SW

Humidity40%

Visibility6.2 mi

Dew point55°

Tue, 1377° / 58°

0.02

77 °

Grinnell, Tuesday, 13 October

Light rain. High 77°, low 58°.

Pressure29.83 inHg

Wind5.6 mph N

Humidity52%

Visibility6.2 mi

Dew point55°

Wed, 1457° / 52°

0.16

57 °

Grinnell, Wednesday, 14 October

Light rain. High 57°, low 52°.

Pressure30.06 inHg

Wind10.9 mph NE

Humidity91%

Visibility5.4 mi

Dew point50°

Thu, 1559° / 50°

0.57

59 °

Grinnell, Thursday, 15 October

Rain. High 59°, low 50°.

Pressure30.18 inHg

Wind18.9 mph N

Humidity64%

Visibility—

Dew point44°

Fri, 1654° / 43°

54 °

Grinnell, Friday, 16 October

Overcast. High 54°, low 43°.

Pressure30.71 inHg

Wind15.6 mph N

Humidity47%

Visibility—

Dew point30°

Sat, 1759° / 36°

59 °

Grinnell, Saturday, 17 October

Clear. High 59°, low 36°.

Pressure30.47 inHg

Wind20.9 mph S

Humidity21%

Visibility—

Dew point12°

Sun, 1871° / 43°

71 °

Grinnell, Sunday, 18 October

Clear. High 71°, low 43°.

Pressure30.09 inHg

Wind18.8 mph S

Humidity23%

Visibility—

Dew point22°

Mon, 1973° / 48°

73 °

Grinnell, Monday, 19 October

Clear. High 73°, low 48°.

Pressure30.06 inHg

Wind18.5 mph S

Humidity32%

Visibility—

Dew point35°

Tue, 2075° / 51°

75 °

Grinnell, Tuesday, 20 October

Clear. High 75°, low 51°.

Pressure29.88 inHg

Wind18.9 mph S

Humidity45%

Visibility—

Dew point44°

Wed, 2175° / 53°

75 °

Grinnell, Wednesday, 21 October

Clear. High 75°, low 53°.

Pressure30.00 inHg

Wind10.4 mph S

Humidity46%

Visibility—

Dew point46°

Thu, 2281° / 56°

81 °

Grinnell, Thursday, 22 October

Clear. High 81°, low 56°.

Pressure29.97 inHg

Wind17.3 mph S

Humidity46%

Visibility—

Dew point51°

Fri, 2375° / 56°

75 °

Grinnell, Friday, 23 October

Clear. High 75°, low 56°.

Pressure30.09 inHg

Wind15.8 mph N

Humidity51%

Visibility—

Dew point51°

Sat, 2480° / 55°

80 °

Grinnell, Saturday, 24 October

Clear. High 80°, low 55°.

Pressure30.06 inHg

Wind10.3 mph S

Humidity48%

Visibility—

Dew point51°

Sun, 2570° / 53°

70 °

Grinnell, Sunday, 25 October

Clear. High 70°, low 53°.

Pressure30.06 inHg

Wind22.2 mph N

Humidity38%

Visibility—

Dew point42°

Mon, 2666° / 45°

66 °

Grinnell, Monday, 26 October

Clear. High 66°, low 45°.

Pressure30.12 inHg

Wind9.6 mph S

Humidity25%

Visibility—

Dew point23°

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

Tue, 2762° / 42°

0.03

62 °

Grinnell, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high62°

Average low42°

Average precipitation0.03 in

Chance of precipitation13%

Record high82° (2016)

Record low7° (1997)

Wed, 2861° / 42°

0.05

61 °

Grinnell, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high61°

Average low42°

Average precipitation0.05 in

Chance of precipitation17%

Record high84° (2016)

Record low24° (2019)

Thu, 2961° / 41°

0.08

61 °

Grinnell, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high61°

Average low41°

Average precipitation0.08 in

Chance of precipitation22%

Record high83° (2003)

Record low21° (1991)

Fri, 3059° / 40°

0.09

59 °

Grinnell, Friday, 30 October

Climate normal for this date — 60-year average.

Average high59°

Average low40°

Average precipitation0.09 in

Chance of precipitation23%

Record high81° (1964)

Record low19° (1993)

Sat, 3158° / 39°

0.05

58 °

Grinnell, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high58°

Average low39°

Average precipitation0.05 in

Chance of precipitation20%

Record high87° (2016)

Record low17° (1991)

Sun, 0157° / 38°

0.06

57 °

Grinnell, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high57°

Average low38°

Average precipitation0.06 in

Chance of precipitation18%

Record high78° (1990)

Record low15° (1991)

Mon, 0257° / 38°

0.05

57 °

Grinnell, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low38°

Average precipitation0.05 in

Chance of precipitation27%

Record high79° (2022)

Record low6° (1991)

Tue, 0357° / 37°

0.04

57 °

Grinnell, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high57°

Average low37°

Average precipitation0.04 in

Chance of precipitation18%

Record high78° (2005)

Record low-1° (1991)

Wed, 0458° / 37°

0.01

58 °

Grinnell, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high58°

Average low37°

Average precipitation0.01 in

Chance of precipitation7%

Record high78° (2020)

Record low-2° (1991)

Thu, 0559° / 38°

0.01

59 °

Grinnell, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high59°

Average low38°

Average precipitation0.01 in

Chance of precipitation8%

Record high75° (2001)

Record low19° (1967)

Fri, 0658° / 37°

0.01

58 °

Grinnell, Friday, 6 November

Climate normal for this date — 60-year average.

Average high58°

Average low37°

Average precipitation0.01 in

Chance of precipitation12%

Record high82° (1980)

Record low19° (1993)

Sat, 0759° / 38°

0.02

59 °

Grinnell, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high59°

Average low38°

Average precipitation0.02 in

Chance of precipitation8%

Record high77° (2014)

Record low19° (1991)

Sun, 0858° / 39°

0.05

58 °

Grinnell, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high58°

Average low39°

Average precipitation0.05 in

Chance of precipitation13%

Record high82° (1980)

Record low21° (1991)

Mon, 0956° / 37°

0.04

56 °

Grinnell, Monday, 9 November

Climate normal for this date — 60-year average.

Average high56°

Average low37°

Average precipitation0.04 in

Chance of precipitation13%

Record high77° (1999)

Record low20° (2000)

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, KS 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, KS 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.