As of 09:50 PST

Weather in Helvetia, OR

52°

Helvetia, Thursday, 12 November, 09:50

Overcast. Feels like 51°. High 58°, low 49°.

Pressure29.77 inHg

Wind2 mph E

Humidity86%

Visibility<0.1 mi

Dew point48°

See detailed hourly forecast

Monthly outlook for Helvetia, OR: average high 47.7°, average low 39.2°. That is 1.1° below the climate normal for November. Precipitation is expected on 8 days (about 2.4 inches), against a normal of 9 days and 4.0 inches. The warmest day looks like 12 November (58.1°), the coolest 26 November (26.8°).

47.7°/39.2°

Average high / low

−1.1°

Below normal

8 / 9

Wet days / normal

2.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 November – 21 November	51.1°	50.9°	+0.1°
22 November – 1 December	42.2°	47.4°	-2.9°
2 December – 11 December	at normal	45.9°	—

November records over 66 years

68.2°1 November 1962All-time high

8.1°23 November 1985All-time low

Climate normals and records are computed from the nearest reference point — Hillsboro (5 mi).

Fri, 1356° / 51°

0.33

56 °

Helvetia, Friday, 13 November

Rain. High 56°, low 51°.

Pressure29.32 inHg

Wind8.2 mph SE

Humidity95%

Visibility4.9 mi

Dew point50°

Sat, 1458° / 48°

0.14

58 °

Helvetia, Saturday, 14 November

Rain. High 58°, low 48°.

Pressure29.77 inHg

Wind9.1 mph S

Humidity83%

Visibility6.2 mi

Dew point48°

Sun, 1552° / 45°

0.51

52 °

Helvetia, Sunday, 15 November

Rain. High 52°, low 45°.

Pressure29.85 inHg

Wind9 mph S

Humidity78%

Visibility4.7 mi

Dew point48°

Mon, 1652° / 40°

0.11

52 °

Helvetia, Monday, 16 November

Light rain. High 52°, low 40°.

Pressure30.15 inHg

Wind11 mph SW

Humidity90%

Visibility—

Dew point43°

Tue, 1749° / 37°

49 °

Helvetia, Tuesday, 17 November

Overcast. High 49°, low 37°.

Pressure30.15 inHg

Wind9.8 mph E

Humidity96%

Visibility—

Dew point40°

Wed, 1845° / 43°

0.73

45 °

Helvetia, Wednesday, 18 November

Rain. High 45°, low 43°.

Pressure29.83 inHg

Wind9.6 mph E

Humidity95%

Visibility—

Dew point42°

Thu, 1944° / 40°

0.12

44 °

Helvetia, Thursday, 19 November

Light rain. High 44°, low 40°.

Pressure30.15 inHg

Wind4.6 mph N

Humidity91%

Visibility—

Dew point41°

Fri, 2049° / 37°

49 °

Helvetia, Friday, 20 November

Overcast. High 49°, low 37°.

Pressure30.06 inHg

Wind7 mph NE

Humidity71%

Visibility—

Dew point34°

Sat, 2149° / 37°

49 °

Helvetia, Saturday, 21 November

Overcast. High 49°, low 37°.

Pressure30.15 inHg

Wind3.1 mph N

Humidity71%

Visibility—

Dew point33°

Sun, 2244° / 34°

44 °

Helvetia, Sunday, 22 November

Partly cloudy. High 44°, low 34°.

Pressure30.27 inHg

Wind5.3 mph S

Humidity70%

Visibility—

Dew point31°

Mon, 2349° / 43°

0.18

49 °

Helvetia, Monday, 23 November

Light rain. High 49°, low 43°.

Pressure30.06 inHg

Wind9.1 mph S

Humidity91%

Visibility—

Dew point42°

Tue, 2443° / 36°

0.3

43 °

Helvetia, Tuesday, 24 November

Light rain. High 43°, low 36°.

Pressure30.06 inHg

Wind7.5 mph NE

Humidity94%

Visibility—

Dew point40°

Wed, 2538° / 31°

38 °

Helvetia, Wednesday, 25 November

Partly cloudy. High 38°, low 31°.

Pressure30.09 inHg

Wind14.7 mph E

Humidity45%

Visibility—

Dew point17°

Thu, 2639° / 27°

39 °

Helvetia, Thursday, 26 November

Clear. High 39°, low 27°.

Pressure30.47 inHg

Wind4.4 mph N

Humidity52%

Visibility—

Dew point17°

Fri, 2739° / 27°

39 °

Helvetia, Friday, 27 November

Clear. High 39°, low 27°.

Pressure30.33 inHg

Wind3.3 mph E

Humidity35%

Visibility—

Dew point8°

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

Sat, 2847° / 36°

0.19

47 °

Helvetia, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high47°

Average low36°

Average precipitation0.19 in

Chance of precipitation47%

Record high58° (2021)

Record low21° (1985)

Sun, 2947° / 37°

0.19

47 °

Helvetia, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.19 in

Chance of precipitation48%

Record high58° (2021)

Record low17° (1985)

Mon, 3047° / 37°

0.27

47 °

Helvetia, Monday, 30 November

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.27 in

Chance of precipitation63%

Record high59° (2008)

Record low15° (1985)

Tue, 0147° / 37°

0.26

47 °

Helvetia, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.26 in

Chance of precipitation58%

Record high57° (2021)

Record low20° (1985)

Wed, 0247° / 37°

0.36

47 °

Helvetia, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.36 in

Chance of precipitation60%

Record high57° (1975)

Record low19° (1985)

Thu, 0347° / 37°

0.3

47 °

Helvetia, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.3 in

Chance of precipitation53%

Record high56° (2023)

Record low26° (1992)

Fri, 0446° / 36°

0.3

46 °

Helvetia, Friday, 4 December

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.3 in

Chance of precipitation58%

Record high59° (2023)

Record low23° (1994)

Sat, 0546° / 35°

0.23

46 °

Helvetia, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high46°

Average low35°

Average precipitation0.23 in

Chance of precipitation48%

Record high58° (2023)

Record low22° (1972)

Sun, 0646° / 36°

0.28

46 °

Helvetia, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.28 in

Chance of precipitation58%

Record high56° (2023)

Record low20° (1972)

Mon, 0745° / 36°

0.24

45 °

Helvetia, Monday, 7 December

Climate normal for this date — 60-year average.

Average high45°

Average low36°

Average precipitation0.24 in

Chance of precipitation50%

Record high56° (2015)

Record low11° (1972)

Tue, 0846° / 35°

0.22

46 °

Helvetia, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high46°

Average low35°

Average precipitation0.22 in

Chance of precipitation47%

Record high58° (2015)

Record low4° (1972)

Wed, 0946° / 35°

0.31

46 °

Helvetia, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high46°

Average low35°

Average precipitation0.31 in

Chance of precipitation65%

Record high56° (2014)

Record low8° (1972)

Thu, 1046° / 37°

0.34

46 °

Helvetia, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.34 in

Chance of precipitation62%

Record high59° (1993)

Record low5° (1972)

Fri, 1146° / 36°

0.31

46 °

Helvetia, Friday, 11 December

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.31 in

Chance of precipitation67%

Record high59° (2025)

Record low14° (1972)

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 Helvetia, 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 Helvetia, 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.