As of 16:10 PDT

Weather in Grimes, CA

80°

Grimes, Wednesday, 14 October, 16:10

Clear. Feels like 79°. High 80°, low 49°.

Pressure30.03 inHg

Wind4.1 mph NW

Humidity23%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Grimes, CA: average high 83.4°, average low 54.5°. That is 4° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 16 October (94.3°), the coolest 14 October (48.6°).

83.4°/54.5°

Average high / low

+4°

Above normal

0 / 2

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
14 October – 23 October	83.7°	78.1°	+3.1°
24 October – 2 November	83°	72.4°	+5.8°
3 November – 12 November	at normal	67.7°	—

October records over 66 years

106.5°1 October 2020All-time high

36.5°27 October 2023All-time low

Climate normals and records are computed from the nearest reference point — Williams (14 mi).

Thu, 1590° / 51°

90 °

Grimes, Thursday, 15 October

Clear. High 90°, low 51°.

Pressure30.12 inHg

Wind12.7 mph N

Humidity14%

Visibility6.2 mi

Dew point32°

Fri, 1694° / 58°

94 °

Grimes, Friday, 16 October

Clear. High 94°, low 58°.

Pressure30.09 inHg

Wind9.4 mph NW

Humidity13%

Visibility6.2 mi

Dew point25°

Sat, 1791° / 59°

91 °

Grimes, Saturday, 17 October

Clear. High 91°, low 59°.

Pressure30.06 inHg

Wind0.8 mph N

Humidity16%

Visibility6.2 mi

Dew point31°

Sun, 1888° / 59°

88 °

Grimes, Sunday, 18 October

Clear. High 88°, low 59°.

Pressure29.94 inHg

Wind2.8 mph S

Humidity20%

Visibility6.2 mi

Dew point33°

Mon, 1977° / 52°

77 °

Grimes, Monday, 19 October

Clear. High 77°, low 52°.

Pressure29.97 inHg

Wind11.1 mph SE

Humidity51%

Visibility—

Dew point44°

Tue, 2076° / 51°

76 °

Grimes, Tuesday, 20 October

Overcast. High 76°, low 51°.

Pressure29.88 inHg

Wind7.6 mph NW

Humidity42%

Visibility—

Dew point38°

Wed, 2178° / 53°

78 °

Grimes, Wednesday, 21 October

Clear. High 78°, low 53°.

Pressure29.85 inHg

Wind14.3 mph SE

Humidity28%

Visibility—

Dew point31°

Thu, 2278° / 54°

78 °

Grimes, Thursday, 22 October

Mostly clear. High 78°, low 54°.

Pressure29.88 inHg

Wind14 mph SE

Humidity42%

Visibility—

Dew point41°

Fri, 2385° / 54°

85 °

Grimes, Friday, 23 October

Clear. High 85°, low 54°.

Pressure30.09 inHg

Wind11.5 mph N

Humidity25%

Visibility—

Dew point29°

Sat, 2484° / 53°

84 °

Grimes, Saturday, 24 October

Clear. High 84°, low 53°.

Pressure30.21 inHg

Wind9 mph S

Humidity11%

Visibility—

Dew point11°

Sun, 2585° / 55°

85 °

Grimes, Sunday, 25 October

Clear. High 85°, low 55°.

Pressure30.21 inHg

Wind8 mph S

Humidity12%

Visibility—

Dew point15°

Mon, 2685° / 56°

85 °

Grimes, Monday, 26 October

Clear. High 85°, low 56°.

Pressure30.06 inHg

Wind7.3 mph S

Humidity14%

Visibility—

Dew point19°

Tue, 2784° / 57°

84 °

Grimes, Tuesday, 27 October

Mostly clear. High 84°, low 57°.

Pressure29.97 inHg

Wind6.7 mph NW

Humidity14%

Visibility—

Dew point19°

Wed, 2881° / 58°

81 °

Grimes, Wednesday, 28 October

Overcast. High 81°, low 58°.

Pressure29.91 inHg

Wind6.7 mph SE

Humidity15%

Visibility—

Dew point20°

Thu, 2979° / 54°

79 °

Grimes, Thursday, 29 October

Clear. High 79°, low 54°.

Pressure29.91 inHg

Wind6.8 mph SE

Humidity18%

Visibility—

Dew point23°

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

Fri, 3071° / 51°

0.06

71 °

Grimes, Friday, 30 October

Climate normal for this date — 60-year average.

Average high71°

Average low51°

Average precipitation0.06 in

Chance of precipitation15%

Record high85° (1966)

Record low40° (1971)

Sat, 3171° / 50°

0.04

71 °

Grimes, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high71°

Average low50°

Average precipitation0.04 in

Chance of precipitation18%

Record high88° (1966)

Record low38° (2019)

Sun, 0171° / 50°

0.06

71 °

Grimes, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high71°

Average low50°

Average precipitation0.06 in

Chance of precipitation17%

Record high89° (1967)

Record low40° (2019)

Mon, 0271° / 51°

0.04

71 °

Grimes, Monday, 2 November

Climate normal for this date — 60-year average.

Average high71°

Average low51°

Average precipitation0.04 in

Chance of precipitation15%

Record high86° (2020)

Record low41° (2002)

Tue, 0371° / 51°

0.04

71 °

Grimes, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high71°

Average low51°

Average precipitation0.04 in

Chance of precipitation10%

Record high88° (2018)

Record low38° (2022)

Wed, 0471° / 50°

0.03

71 °

Grimes, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high71°

Average low50°

Average precipitation0.03 in

Chance of precipitation10%

Record high82° (1976)

Record low38° (1973)

Thu, 0570° / 50°

0.07

70 °

Grimes, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high70°

Average low50°

Average precipitation0.07 in

Chance of precipitation15%

Record high84° (2020)

Record low39° (2017)

Fri, 0669° / 51°

0.04

69 °

Grimes, Friday, 6 November

Climate normal for this date — 60-year average.

Average high69°

Average low51°

Average precipitation0.04 in

Chance of precipitation15%

Record high83° (1991)

Record low41° (1998)

Sat, 0768° / 49°

0.09

68 °

Grimes, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high68°

Average low49°

Average precipitation0.09 in

Chance of precipitation22%

Record high82° (1991)

Record low38° (2017)

Sun, 0867° / 48°

0.09

67 °

Grimes, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high67°

Average low48°

Average precipitation0.09 in

Chance of precipitation20%

Record high81° (2019)

Record low40° (2024)

Mon, 0966° / 47°

0.11

66 °

Grimes, Monday, 9 November

Climate normal for this date — 60-year average.

Average high66°

Average low47°

Average precipitation0.11 in

Chance of precipitation23%

Record high81° (1990)

Record low36° (1998)

Tue, 1065° / 47°

0.13

65 °

Grimes, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high65°

Average low47°

Average precipitation0.13 in

Chance of precipitation33%

Record high81° (1990)

Record low31° (2020)

Wed, 1165° / 47°

0.13

65 °

Grimes, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high65°

Average low47°

Average precipitation0.13 in

Chance of precipitation25%

Record high85° (2019)

Record low35° (2000)

Thu, 1265° / 47°

0.07

65 °

Grimes, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high65°

Average low47°

Average precipitation0.07 in

Chance of precipitation20%

Record high78° (1990)

Record low34° (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 Grimes, CA 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 Grimes, CA 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.