As of 18:03 PDT

Weather in Ahtanum, WA

48°

Ahtanum, Wednesday, 28 October, 18:03

Clear. Feels like 44°. High 50°, low 41°.

Pressure29.97 inHg

Wind9 mph SW

Humidity62%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

Monthly outlook for Ahtanum, WA: average high 54.2°, average low 39.6°. That is 2° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 11 November (58.9°), the coolest 31 October (30.8°).

54.2°/39.6°

Average high / low

+2°

Above normal

1 / 5

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
28 October – 6 November	53.1°	52°	+0.6°
7 November – 16 November	56°	47.9°	+4.5°
17 November – 26 November	at normal	42.5°	—

October records over 66 years

87.8°6 October 2014All-time high

17.6°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Yakima (4 mi).

Thu, 2952° / 35°

52 °

Ahtanum, Thursday, 29 October

Overcast. High 52°, low 35°.

Pressure30.06 inHg

Wind1.8 mph NE

Humidity59%

Visibility6.2 mi

Dew point33°

Fri, 3052° / 35°

0.05

52 °

Ahtanum, Friday, 30 October

Light rain. High 52°, low 35°.

Pressure29.91 inHg

Wind0.6 mph S

Humidity57%

Visibility6.2 mi

Dew point35°

Sat, 3151° / 31°

51 °

Ahtanum, Saturday, 31 October

Overcast. High 51°, low 31°.

Pressure30.06 inHg

Wind2.9 mph NE

Humidity57%

Visibility6.2 mi

Dew point35°

Sun, 0156° / 34°

56 °

Ahtanum, Sunday, 1 November

Clear. High 56°, low 34°.

Pressure30.09 inHg

Wind0.9 mph SE

Humidity53%

Visibility6.2 mi

Dew point35°

Mon, 0254° / 33°

54 °

Ahtanum, Monday, 2 November

Overcast. High 54°, low 33°.

Pressure30.36 inHg

Wind4.1 mph NW

Humidity49%

Visibility—

Dew point28°

Tue, 0352° / 38°

52 °

Ahtanum, Tuesday, 3 November

Overcast. High 52°, low 38°.

Pressure30.30 inHg

Wind4.7 mph NW

Humidity49%

Visibility—

Dew point28°

Wed, 0454° / 41°

54 °

Ahtanum, Wednesday, 4 November

Overcast. High 54°, low 41°.

Pressure30.09 inHg

Wind4.3 mph NW

Humidity37%

Visibility—

Dew point23°

Thu, 0554° / 44°

54 °

Ahtanum, Thursday, 5 November

Overcast. High 54°, low 44°.

Pressure29.91 inHg

Wind2.7 mph SE

Humidity34%

Visibility—

Dew point22°

Fri, 0655° / 41°

55 °

Ahtanum, Friday, 6 November

Overcast. High 55°, low 41°.

Pressure29.85 inHg

Wind3.7 mph NW

Humidity39%

Visibility—

Dew point25°

Sat, 0756° / 43°

56 °

Ahtanum, Saturday, 7 November

Overcast. High 56°, low 43°.

Pressure29.88 inHg

Wind5.2 mph E

Humidity37%

Visibility—

Dew point24°

Sun, 0855° / 41°

55 °

Ahtanum, Sunday, 8 November

Overcast. High 55°, low 41°.

Pressure30.27 inHg

Wind3.3 mph SE

Humidity54%

Visibility—

Dew point32°

Mon, 0954° / 44°

54 °

Ahtanum, Monday, 9 November

Overcast. High 54°, low 44°.

Pressure30.27 inHg

Wind2.3 mph NW

Humidity52%

Visibility—

Dew point33°

Tue, 1055° / 45°

55 °

Ahtanum, Tuesday, 10 November

Overcast. High 55°, low 45°.

Pressure30.18 inHg

Wind3 mph SE

Humidity56%

Visibility—

Dew point34°

Wed, 1159° / 44°

59 °

Ahtanum, Wednesday, 11 November

Clear. High 59°, low 44°.

Pressure30.21 inHg

Wind3.3 mph NW

Humidity52%

Visibility—

Dew point35°

Thu, 1258° / 45°

58 °

Ahtanum, Thursday, 12 November

Overcast. High 58°, low 45°.

Pressure30.06 inHg

Wind4 mph NW

Humidity53%

Visibility—

Dew point35°

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

Fri, 1347° / 33°

0.08

47 °

Ahtanum, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°

Average low33°

Average precipitation0.08 in

Chance of precipitation35%

Record high64° (1999)

Record low15° (1985)

Sat, 1448° / 33°

0.05

48 °

Ahtanum, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.05 in

Chance of precipitation25%

Record high64° (2021)

Record low16° (1964)

Sun, 1547° / 33°

0.06

47 °

Ahtanum, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high47°

Average low33°

Average precipitation0.06 in

Chance of precipitation30%

Record high60° (2021)

Record low17° (1964)

Mon, 1646° / 33°

0.06

46 °

Ahtanum, Monday, 16 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.06 in

Chance of precipitation33%

Record high62° (1976)

Record low18° (2000)

Tue, 1746° / 32°

0.07

46 °

Ahtanum, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.07 in

Chance of precipitation38%

Record high62° (2019)

Record low18° (1987)

Wed, 1845° / 30°

0.05

45 °

Ahtanum, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high45°

Average low30°

Average precipitation0.05 in

Chance of precipitation27%

Record high57° (2008)

Record low15° (1985)

Thu, 1944° / 30°

0.12

44 °

Ahtanum, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high44°

Average low30°

Average precipitation0.12 in

Chance of precipitation48%

Record high56° (2019)

Record low-7° (1985)

Fri, 2044° / 30°

0.09

44 °

Ahtanum, Friday, 20 November

Climate normal for this date — 60-year average.

Average high44°

Average low30°

Average precipitation0.09 in

Chance of precipitation27%

Record high55° (2017)

Record low14° (1977)

Sat, 2142° / 29°

0.07

42 °

Ahtanum, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high42°

Average low29°

Average precipitation0.07 in

Chance of precipitation25%

Record high54° (1989)

Record low4° (1977)

Sun, 2241° / 28°

0.09

41 °

Ahtanum, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high41°

Average low28°

Average precipitation0.09 in

Chance of precipitation35%

Record high55° (2017)

Record low5° (1985)

Mon, 2340° / 27°

0.07

40 °

Ahtanum, Monday, 23 November

Climate normal for this date — 60-year average.

Average high40°

Average low27°

Average precipitation0.07 in

Chance of precipitation43%

Record high58° (2017)

Record low-14° (1985)

Tue, 2441° / 28°

0.11

41 °

Ahtanum, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high41°

Average low28°

Average precipitation0.11 in

Chance of precipitation45%

Record high57° (1995)

Record low-7° (1985)

Wed, 2541° / 27°

0.11

41 °

Ahtanum, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high41°

Average low27°

Average precipitation0.11 in

Chance of precipitation32%

Record high55° (1963)

Record low-7° (1985)

Thu, 2640° / 26°

0.05

40 °

Ahtanum, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high40°

Average low26°

Average precipitation0.05 in

Chance of precipitation25%

Record high55° (2014)

Record low-2° (1985)

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 Ahtanum, WA 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 Ahtanum, WA 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.