As of 10:34 PDT

Weather in St. Helens, OR

53°

St. Helens, Friday, 23 October, 10:34

Overcast. Feels like 52°. High 58°, low 43°.

Pressure30.30 inHg

Wind4 mph N

Humidity79%

Visibility5.0 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for St. Helens, OR: average high 59.1°, average low 43.6°. That is 1.8° above the climate normal for October. Precipitation is expected on 7 days (about 8.1 inches), against a normal of 9 days and 3.5 inches. The warmest day looks like 29 October (69.5°), the coolest 31 October (37.7°).

59.1°/43.6°

Average high / low

+1.8°

Above normal

7 / 9

Wet days / normal

8.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
23 October – 1 November	61.1°	56.6°	+2.5°
2 November – 11 November	55.7°	53.7°	+1.1°
12 November – 21 November	at normal	50.7°	—

October records over 66 years

89.8°1 October 1987All-time high

27.3°28 October 1971All-time low

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

Sat, 2459° / 41°

59 °

St. Helens, Saturday, 24 October

Overcast. High 59°, low 41°.

Pressure30.18 inHg

Wind0.2 mph N

Humidity70%

Visibility6.2 mi

Dew point42°

Sun, 2559° / 42°

0.38

59 °

St. Helens, Sunday, 25 October

Rain. High 59°, low 42°.

Pressure29.97 inHg

Wind11.9 mph SE

Humidity60%

Visibility2.1 mi

Dew point42°

Mon, 2656° / 46°

0.08

56 °

St. Helens, Monday, 26 October

Light rain. High 56°, low 46°.

Pressure30.00 inHg

Wind6.5 mph SE

Humidity90%

Visibility6.2 mi

Dew point50°

Tue, 2756° / 46°

0.01

56 °

St. Helens, Tuesday, 27 October

Light rain. High 56°, low 46°.

Pressure30.12 inHg

Wind4.7 mph SE

Humidity84%

Visibility—

Dew point47°

Wed, 2855° / 44°

55 °

St. Helens, Wednesday, 28 October

Overcast. High 55°, low 44°.

Pressure30.06 inHg

Wind8.9 mph NW

Humidity83%

Visibility—

Dew point44°

Thu, 2970° / 39°

70 °

St. Helens, Thursday, 29 October

Clear. High 70°, low 39°.

Pressure30.09 inHg

Wind5.2 mph NW

Humidity48%

Visibility—

Dew point35°

Fri, 3063° / 38°

63 °

St. Helens, Friday, 30 October

Clear. High 63°, low 38°.

Pressure30.00 inHg

Wind3.8 mph SE

Humidity42%

Visibility—

Dew point30°

Sat, 3166° / 38°

66 °

St. Helens, Saturday, 31 October

Clear. High 66°, low 38°.

Pressure29.91 inHg

Wind5.5 mph N

Humidity40%

Visibility—

Dew point30°

Sun, 0169° / 39°

69 °

St. Helens, Sunday, 1 November

Clear. High 69°, low 39°.

Pressure29.77 inHg

Wind7.3 mph N

Humidity41%

Visibility—

Dew point31°

Mon, 0264° / 38°

64 °

St. Helens, Monday, 2 November

Clear. High 64°, low 38°.

Pressure29.85 inHg

Wind5 mph NW

Humidity45%

Visibility—

Dew point32°

Tue, 0348° / 43°

0.46

48 °

St. Helens, Tuesday, 3 November

Rain. High 48°, low 43°.

Pressure29.97 inHg

Wind3 mph E

Humidity97%

Visibility—

Dew point44°

Wed, 0449° / 43°

0.87

49 °

St. Helens, Wednesday, 4 November

Rain. High 49°, low 43°.

Pressure29.91 inHg

Wind14.6 mph S

Humidity93%

Visibility—

Dew point43°

Thu, 0559° / 49°

4.25

59 °

St. Helens, Thursday, 5 November

Heavy rain. High 59°, low 49°.

Pressure29.44 inHg

Wind19.8 mph SW

Humidity95%

Visibility—

Dew point50°

Fri, 0658° / 54°

0.83

58 °

St. Helens, Friday, 6 November

Rain. High 58°, low 54°.

Pressure29.80 inHg

Wind17.5 mph S

Humidity90%

Visibility—

Dew point54°

Sat, 0757° / 54°

1.22

57 °

St. Helens, Saturday, 7 November

Rain. High 57°, low 54°.

Pressure29.62 inHg

Wind11.8 mph S

Humidity94%

Visibility—

Dew point55°

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

Sun, 0853° / 41°

0.2

53 °

St. Helens, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.2 in

Chance of precipitation53%

Record high67° (1976)

Record low32° (2020)

Mon, 0952° / 42°

0.2

52 °

St. Helens, Monday, 9 November

Climate normal for this date — 60-year average.

Average high52°

Average low42°

Average precipitation0.2 in

Chance of precipitation60%

Record high65° (1996)

Record low28° (2020)

Tue, 1053° / 41°

0.19

53 °

St. Helens, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.19 in

Chance of precipitation52%

Record high66° (2016)

Record low28° (1985)

Wed, 1153° / 41°

0.24

53 °

St. Helens, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.24 in

Chance of precipitation53%

Record high64° (1976)

Record low27° (1978)

Thu, 1253° / 42°

0.25

53 °

St. Helens, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.25 in

Chance of precipitation60%

Record high63° (1967)

Record low27° (1985)

Fri, 1353° / 41°

0.3

53 °

St. Helens, Friday, 13 November

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.3 in

Chance of precipitation63%

Record high64° (1999)

Record low25° (1985)

Sat, 1452° / 41°

0.21

52 °

St. Helens, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high52°

Average low41°

Average precipitation0.21 in

Chance of precipitation45%

Record high67° (1999)

Record low25° (1964)

Sun, 1552° / 40°

0.25

52 °

St. Helens, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high52°

Average low40°

Average precipitation0.25 in

Chance of precipitation62%

Record high61° (2008)

Record low27° (1964)

Mon, 1650° / 41°

0.21

50 °

St. Helens, Monday, 16 November

Climate normal for this date — 60-year average.

Average high50°

Average low41°

Average precipitation0.21 in

Chance of precipitation72%

Record high62° (1976)

Record low28° (1964)

Tue, 1751° / 40°

0.27

51 °

St. Helens, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high51°

Average low40°

Average precipitation0.27 in

Chance of precipitation70%

Record high62° (1995)

Record low27° (1961)

Wed, 1849° / 39°

0.18

49 °

St. Helens, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.18 in

Chance of precipitation53%

Record high59° (1989)

Record low24° (1985)

Thu, 1949° / 40°

0.37

49 °

St. Helens, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high49°

Average low40°

Average precipitation0.37 in

Chance of precipitation67%

Record high60° (1987)

Record low27° (2000)

Fri, 2050° / 39°

0.3

50 °

St. Helens, Friday, 20 November

Climate normal for this date — 60-year average.

Average high50°

Average low39°

Average precipitation0.3 in

Chance of precipitation57%

Record high65° (2002)

Record low26° (1977)

Sat, 2148° / 37°

0.26

48 °

St. Helens, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.26 in

Chance of precipitation57%

Record high60° (2002)

Record low17° (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 St. Helens, OR 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. Helens, OR 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.