As of 18:29 PDT

Weather in Delta, ID

66°

Delta, Thursday, 8 October, 18:29

Overcast. Feels like 65°. High 69°, low 38°.

Pressure29.91 inHg

Wind0.2 mph N

Humidity47%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Monthly outlook for Delta, ID: average high 56.2°, average low 34.9°. That is 0.7° below the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 8 October (69.3°), the coolest 10 October (27.6°).

56.2°/34.9°

Average high / low

−0.7°

Below normal

2 / 6

Wet days / normal

0.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	52.9°	58.6°	-3.2°
18 October – 27 October	61.9°	54.1°	+4.4°
28 October – 6 November	at normal	47.6°	—

October records over 66 years

86.4°1 October 1992All-time high

3.9°21 October 1996All-time low

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

Fri, 0961° / 37°

0.03

61 °

Delta, Friday, 9 October

Light rain. High 61°, low 37°.

Pressure29.62 inHg

Wind13 mph SW

Humidity44%

Visibility6.2 mi

Dew point40°

Sat, 1050° / 28°

50 °

Delta, Saturday, 10 October

Mostly clear. High 50°, low 28°.

Pressure29.80 inHg

Wind2.4 mph W

Humidity53%

Visibility6.2 mi

Dew point28°

Sun, 1137° / 33°

0.16

37 °

Delta, Sunday, 11 October

Snow. High 37°, low 33°.

Pressure29.97 inHg

Wind15 mph NE

Humidity78%

Visibility2.7 mi

Dew point24°

Mon, 1248° / 30°

48 °

Delta, Monday, 12 October

Overcast. High 48°, low 30°.

Pressure30.03 inHg

Wind1.8 mph NE

Humidity59%

Visibility6.2 mi

Dew point28°

Tue, 1352° / 31°

52 °

Delta, Tuesday, 13 October

Clear. High 52°, low 31°.

Pressure30.12 inHg

Wind4.7 mph SW

Humidity54%

Visibility—

Dew point29°

Wed, 1444° / 33°

0.14

44 °

Delta, Wednesday, 14 October

Light rain. High 44°, low 33°.

Pressure30.12 inHg

Wind3.6 mph W

Humidity81%

Visibility—

Dew point35°

Thu, 1549° / 32°

0.02

49 °

Delta, Thursday, 15 October

Light rain. High 49°, low 32°.

Pressure30.45 inHg

Wind9.1 mph NE

Humidity56%

Visibility—

Dew point28°

Fri, 1657° / 29°

57 °

Delta, Friday, 16 October

Mostly clear. High 57°, low 29°.

Pressure30.50 inHg

Wind4.3 mph E

Humidity31%

Visibility—

Dew point19°

Sat, 1761° / 36°

61 °

Delta, Saturday, 17 October

Overcast. High 61°, low 36°.

Pressure30.24 inHg

Wind3.5 mph SE

Humidity29%

Visibility—

Dew point23°

Sun, 1864° / 38°

64 °

Delta, Sunday, 18 October

Clear. High 64°, low 38°.

Pressure30.24 inHg

Wind3.9 mph E

Humidity34%

Visibility—

Dew point28°

Mon, 1962° / 39°

62 °

Delta, Monday, 19 October

Clear. High 62°, low 39°.

Pressure30.06 inHg

Wind7.7 mph W

Humidity30%

Visibility—

Dew point25°

Tue, 2060° / 38°

60 °

Delta, Tuesday, 20 October

Overcast. High 60°, low 38°.

Pressure30.06 inHg

Wind3.7 mph W

Humidity32%

Visibility—

Dew point25°

Wed, 2158° / 36°

58 °

Delta, Wednesday, 21 October

Clear. High 58°, low 36°.

Pressure30.21 inHg

Wind2.8 mph W

Humidity39%

Visibility—

Dew point28°

Thu, 2265° / 38°

65 °

Delta, Thursday, 22 October

Partly cloudy. High 65°, low 38°.

Pressure30.21 inHg

Wind3.7 mph SE

Humidity30%

Visibility—

Dew point26°

Fri, 2363° / 42°

63 °

Delta, Friday, 23 October

Clear. High 63°, low 42°.

Pressure30.00 inHg

Wind5 mph W

Humidity30%

Visibility—

Dew point26°

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

Sat, 2453° / 36°

0.11

53 °

Delta, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high53°

Average low36°

Average precipitation0.11 in

Chance of precipitation42%

Record high69° (1986)

Record low20° (2020)

Sun, 2553° / 36°

0.14

53 °

Delta, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°

Average low36°

Average precipitation0.14 in

Chance of precipitation43%

Record high71° (2005)

Record low8° (2020)

Mon, 2651° / 36°

0.16

51 °

Delta, Monday, 26 October

Climate normal for this date — 60-year average.

Average high51°

Average low36°

Average precipitation0.16 in

Chance of precipitation47%

Record high70° (1986)

Record low6° (2020)

Tue, 2750° / 34°

0.14

50 °

Delta, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.14 in

Chance of precipitation48%

Record high67° (1965)

Record low11° (1975)

Wed, 2850° / 34°

0.15

50 °

Delta, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.15 in

Chance of precipitation52%

Record high64° (1962)

Record low17° (1970)

Thu, 2948° / 33°

0.17

48 °

Delta, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.17 in

Chance of precipitation50%

Record high69° (1962)

Record low4° (1961)

Fri, 3048° / 33°

0.14

48 °

Delta, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.14 in

Chance of precipitation45%

Record high67° (2008)

Record low11° (2002)

Sat, 3147° / 34°

0.2

47 °

Delta, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.2 in

Chance of precipitation53%

Record high66° (1988)

Record low7° (1996)

Sun, 0148° / 33°

0.18

48 °

Delta, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.18 in

Chance of precipitation47%

Record high65° (1965)

Record low1° (1984)

Mon, 0247° / 33°

0.2

47 °

Delta, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°

Average low33°

Average precipitation0.2 in

Chance of precipitation48%

Record high66° (1981)

Record low9° (1991)

Tue, 0348° / 33°

0.12

48 °

Delta, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.12 in

Chance of precipitation45%

Record high62° (1965)

Record low12° (1994)

Wed, 0447° / 34°

0.26

47 °

Delta, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.26 in

Chance of precipitation57%

Record high66° (1975)

Record low7° (1961)

Thu, 0547° / 33°

0.19

47 °

Delta, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°

Average low33°

Average precipitation0.19 in

Chance of precipitation62%

Record high67° (1975)

Record low0° (1961)

Fri, 0646° / 32°

0.22

46 °

Delta, Friday, 6 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.22 in

Chance of precipitation65%

Record high64° (2012)

Record low0° (1971)

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 Delta, ID 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 Delta, ID 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.