As of 21:57 CDT

Weather in St. Peters, MO

66°Current weather

St. Peters, Friday, 30 October, 21:57

Clear. Feels like 65°. High 75°, low 57°.

Pressure30.24 inHg
Wind11 mph S
Humidity74%
Visibility6.2 mi
Dew point57°

Monthly outlook for St. Peters, MO: average high 71.5°, average low 58.9°. That is 7.8° above the climate normal for October. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 12 November (78.7°), the coolest 14 November (50.9°).

71.5°/58.9°
Average high / low
+7.8°
Above normal
7 / 4
Wet days / normal
1.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
30 October – 8 November71.7°59.1°+7°
9 November – 18 November71.1°54.5°+9.2°
19 November – 28 Novemberat normal50.4°—

October records over 66 years

91.9°10 October 1963All-time high
28.8°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — O'Fallon (6 mi).

Sat, 3169° / 61°0Overcast
69 °Overcast

St. Peters, Saturday, 31 October

Overcast. High 69°, low 61°.

Pressure30.27 inHg
Wind4 mph SE
Humidity58%
Visibility6.2 mi
Dew point49°
Sun, 0167° / 58°0Overcast
67 °Overcast

St. Peters, Sunday, 1 November

Overcast. High 67°, low 58°.

Pressure30.27 inHg
Wind8.4 mph SE
Humidity71%
Visibility6.2 mi
Dew point56°
Mon, 0270° / 59°0Overcast
70 °Overcast

St. Peters, Monday, 2 November

Overcast. High 70°, low 59°.

Pressure30.09 inHg
Wind10.7 mph SE
Humidity66%
Visibility6.2 mi
Dew point55°
Tue, 0370° / 64°0.45Rain
70 °Rain

St. Peters, Tuesday, 3 November

Rain. High 70°, low 64°.

Pressure29.83 inHg
Wind15.3 mph S
Humidity74%
Visibility6.2 mi
Dew point60°
Wed, 0469° / 62°0.32Rain
69 °Rain

St. Peters, Wednesday, 4 November

Rain. High 69°, low 62°.

Pressure29.71 inHg
Wind9.2 mph W
Humidity60%
Visibility—
Dew point53°
Thu, 0574° / 58°0Mostly clear
74 °Mostly clear

St. Peters, Thursday, 5 November

Mostly clear. High 74°, low 58°.

Pressure29.94 inHg
Wind7.8 mph S
Humidity40%
Visibility—
Dew point45°
Fri, 0674° / 54°0Partly cloudy
74 °Partly cloudy

St. Peters, Friday, 6 November

Partly cloudy. High 74°, low 54°.

Pressure29.97 inHg
Wind6.9 mph S
Humidity41%
Visibility—
Dew point45°
Sat, 0773° / 58°0Overcast
73 °Overcast

St. Peters, Saturday, 7 November

Overcast. High 73°, low 58°.

Pressure30.00 inHg
Wind7.2 mph S
Humidity43%
Visibility—
Dew point46°
Sun, 0876° / 61°0.1Light rain
76 °Light rain

St. Peters, Sunday, 8 November

Light rain. High 76°, low 61°.

Pressure30.09 inHg
Wind10.6 mph SE
Humidity58%
Visibility—
Dew point58°
Mon, 0973° / 64°0.09Light rain
73 °Light rain

St. Peters, Monday, 9 November

Light rain. High 73°, low 64°.

Pressure30.15 inHg
Wind13.2 mph SE
Humidity66%
Visibility—
Dew point59°
Tue, 1072° / 62°0.28Rain
72 °Rain

St. Peters, Tuesday, 10 November

Rain. High 72°, low 62°.

Pressure30.09 inHg
Wind6.7 mph SW
Humidity52%
Visibility—
Dew point51°
Wed, 1172° / 57°0Clear
72 °Clear

St. Peters, Wednesday, 11 November

Clear. High 72°, low 57°.

Pressure29.91 inHg
Wind9.6 mph SW
Humidity51%
Visibility—
Dew point51°
Thu, 1279° / 60°0.09Light rain
79 °Light rain

St. Peters, Thursday, 12 November

Light rain. High 79°, low 60°.

Pressure29.71 inHg
Wind15.3 mph S
Humidity50%
Visibility—
Dew point55°
Fri, 1369° / 57°0.16Light rain
69 °Light rain

St. Peters, Friday, 13 November

Light rain. High 69°, low 57°.

Pressure29.56 inHg
Wind13.3 mph SW
Humidity60%
Visibility—
Dew point53°
Sat, 1462° / 51°0Partly cloudy
62 °Partly cloudy

St. Peters, Saturday, 14 November

Partly cloudy. High 62°, low 51°.

Pressure29.80 inHg
Wind16.2 mph W
Humidity38%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1554° / 39°0.12Climate normal
54 °Climate normal

St. Peters, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.12 in
Chance of precipitation30%
Record high76° (2025)
Record low22° (2019)
Mon, 1654° / 38°0.11Climate normal
54 °Climate normal

St. Peters, Monday, 16 November

Climate normal for this date — 60-year average.

Average high54°
Average low38°
Average precipitation0.11 in
Chance of precipitation22%
Record high72° (2001)
Record low25° (1997)
Tue, 1755° / 39°0.13Climate normal
55 °Climate normal

St. Peters, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high55°
Average low39°
Average precipitation0.13 in
Chance of precipitation28%
Record high76° (2016)
Record low19° (2014)
Wed, 1854° / 39°0.15Climate normal
54 °Climate normal

St. Peters, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.15 in
Chance of precipitation30%
Record high72° (2024)
Record low14° (2014)
Thu, 1954° / 39°0.1Climate normal
54 °Climate normal

St. Peters, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation27%
Record high72° (1979)
Record low22° (2022)
Fri, 2052° / 38°0.13Climate normal
52 °Climate normal

St. Peters, Friday, 20 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.13 in
Chance of precipitation30%
Record high73° (2007)
Record low19° (1984)
Sat, 2151° / 37°0.09Climate normal
51 °Climate normal

St. Peters, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation25%
Record high69° (1990)
Record low16° (1964)
Sun, 2251° / 36°0.09Climate normal
51 °Climate normal

St. Peters, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.09 in
Chance of precipitation25%
Record high72° (2010)
Record low17° (1964)
Mon, 2351° / 36°0.09Climate normal
51 °Climate normal

St. Peters, Monday, 23 November

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.09 in
Chance of precipitation28%
Record high68° (1966)
Record low18° (1970)
Tue, 2450° / 35°0.13Climate normal
50 °Climate normal

St. Peters, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.13 in
Chance of precipitation28%
Record high70° (1966)
Record low16° (1970)
Wed, 2550° / 36°0.13Climate normal
50 °Climate normal

St. Peters, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.13 in
Chance of precipitation33%
Record high69° (1990)
Record low21° (1977)
Thu, 2650° / 36°0.15Climate normal
50 °Climate normal

St. Peters, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.15 in
Chance of precipitation42%
Record high76° (1965)
Record low14° (1977)
Fri, 2748° / 35°0.2Climate normal
48 °Climate normal

St. Peters, Friday, 27 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.2 in
Chance of precipitation42%
Record high70° (1989)
Record low14° (1993)
Sat, 2846° / 33°0.08Climate normal
46 °Climate normal

St. Peters, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.08 in
Chance of precipitation23%
Record high71° (1998)
Record low14° (1977)

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 St. Peters, MO 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 St. Peters, MO 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.