As of 21:13 PDT

Weather in St. Helens, OR

51°

St. Helens, Thursday, 22 October, 21:13

Clear. Feels like 49°. High 61°, low 43°.

Pressure30.03 inHg

Wind5.7 mph N

Humidity70%

Visibility6.2 mi

Dew point41°

See detailed hourly forecast

Monthly outlook for St. Helens, OR: average high 56.5°, average low 40.2°. That is 0.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 9 days and 3.5 inches. The warmest day looks like 6 November (65.2°), the coolest 2 November (35.5°).

56.5°/40.2°

Average high / low

+0.2°

Above normal

4 / 9

Wet days / normal

1.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
22 October – 31 October	53.6°	57.1°	-1.9°
1 November – 10 November	61.3°	54°	+4.1°
11 November – 20 November	at normal	51.2°	—

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).

Fri, 2361° / 41°

61 °

St. Helens, Friday, 23 October

Overcast. High 61°, low 41°.

Pressure30.33 inHg

Wind4.6 mph NW

Humidity62%

Visibility6.2 mi

Dew point42°

Sat, 2456° / 38°

56 °

St. Helens, Saturday, 24 October

Overcast. High 56°, low 38°.

Pressure30.18 inHg

Wind1.3 mph NW

Humidity73%

Visibility6.2 mi

Dew point42°

Sun, 2552° / 44°

0.49

52 °

St. Helens, Sunday, 25 October

Rain. High 52°, low 44°.

Pressure29.97 inHg

Wind8.3 mph SE

Humidity96%

Visibility5.9 mi

Dew point47°

Mon, 2652° / 43°

0.16

52 °

St. Helens, Monday, 26 October

Light rain. High 52°, low 43°.

Pressure30.03 inHg

Wind5.2 mph SE

Humidity94%

Visibility5.9 mi

Dew point48°

Tue, 2753° / 44°

53 °

St. Helens, Tuesday, 27 October

Overcast. High 53°, low 44°.

Pressure30.21 inHg

Wind3.8 mph NW

Humidity91%

Visibility—

Dew point45°

Wed, 2853° / 42°

0.45

53 °

St. Helens, Wednesday, 28 October

Rain. High 53°, low 42°.

Pressure30.12 inHg

Wind7.4 mph W

Humidity71%

Visibility—

Dew point43°

Thu, 2949° / 40°

0.26

49 °

St. Helens, Thursday, 29 October

Rain. High 49°, low 40°.

Pressure30.00 inHg

Wind3.1 mph NW

Humidity89%

Visibility—

Dew point42°

Fri, 3047° / 36°

47 °

St. Helens, Friday, 30 October

Overcast. High 47°, low 36°.

Pressure30.09 inHg

Wind2.9 mph E

Humidity82%

Visibility—

Dew point40°

Sat, 3150° / 41°

50 °

St. Helens, Saturday, 31 October

Overcast. High 50°, low 41°.

Pressure30.15 inHg

Wind2.5 mph S

Humidity85%

Visibility—

Dew point41°

Sun, 0157° / 37°

57 °

St. Helens, Sunday, 1 November

Overcast. High 57°, low 37°.

Pressure30.30 inHg

Wind4.4 mph N

Humidity68%

Visibility—

Dew point39°

Mon, 0259° / 35°

59 °

St. Helens, Monday, 2 November

Partly cloudy. High 59°, low 35°.

Pressure30.47 inHg

Wind3.6 mph NW

Humidity58%

Visibility—

Dew point34°

Tue, 0362° / 37°

62 °

St. Helens, Tuesday, 3 November

Overcast. High 62°, low 37°.

Pressure30.45 inHg

Wind3.5 mph S

Humidity53%

Visibility—

Dew point33°

Wed, 0462° / 40°

62 °

St. Helens, Wednesday, 4 November

Overcast. High 62°, low 40°.

Pressure30.30 inHg

Wind3.2 mph S

Humidity50%

Visibility—

Dew point33°

Thu, 0563° / 39°

63 °

St. Helens, Thursday, 5 November

Partly cloudy. High 63°, low 39°.

Pressure30.18 inHg

Wind3 mph S

Humidity49%

Visibility—

Dew point33°

Fri, 0665° / 42°

65 °

St. Helens, Friday, 6 November

Overcast. High 65°, low 42°.

Pressure30.21 inHg

Wind4.5 mph NW

Humidity47%

Visibility—

Dew point35°

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

Sat, 0754° / 42°

0.24

54 °

St. Helens, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.24 in

Chance of precipitation62%

Record high64° (2016)

Record low33° (2020)

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)

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.