As of 01:29 MDT

Weather in Spring Valley, WY

50°

Spring Valley, Wednesday, 21 October, 01:29

Overcast. Feels like 48°. High 61°, low 42°.

Pressure30.15 inHg

Wind3.7 mph S

Humidity70%

Visibility5.4 mi

Dew point40°

See detailed hourly forecast

Monthly outlook for Spring Valley, WY: average high 54.4°, average low 37.2°. That is 3.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 3 November (65.3°), the coolest 24 October (30.7°).

54.4°/37.2°

Average high / low

+3.8°

Above normal

3 / 4

Wet days / normal

0.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
21 October – 30 October	52.2°	49.4°	+1.6°
31 October – 9 November	58°	43.8°	+7.9°
10 November – 19 November	at normal	38.8°	—

October records over 66 years

79°4 October 2024All-time high

-11.9°30 October 2019All-time low

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

Thu, 2260° / 47°

0.04

60 °

Spring Valley, Thursday, 22 October

Light rain. High 60°, low 47°.

Pressure30.03 inHg

Wind8.5 mph NE

Humidity69%

Visibility6.2 mi

Dew point44°

Fri, 2352° / 35°

0.11

52 °

Spring Valley, Friday, 23 October

Rain. High 52°, low 35°.

Pressure29.83 inHg

Wind18.5 mph SW

Humidity45%

Visibility6.2 mi

Dew point28°

Sat, 2446° / 31°

46 °

Spring Valley, Saturday, 24 October

Overcast. High 46°, low 31°.

Pressure30.24 inHg

Wind11.6 mph E

Humidity83%

Visibility6.2 mi

Dew point34°

Sun, 2544° / 31°

0.03

44 °

Spring Valley, Sunday, 25 October

Light rain. High 44°, low 31°.

Pressure30.24 inHg

Wind9.7 mph NE

Humidity72%

Visibility—

Dew point31°

Mon, 2651° / 32°

51 °

Spring Valley, Monday, 26 October

Partly cloudy. High 51°, low 32°.

Pressure30.33 inHg

Wind10.5 mph E

Humidity55%

Visibility—

Dew point30°

Tue, 2751° / 33°

51 °

Spring Valley, Tuesday, 27 October

Clear. High 51°, low 33°.

Pressure30.21 inHg

Wind11.2 mph W

Humidity33%

Visibility—

Dew point18°

Wed, 2851° / 31°

51 °

Spring Valley, Wednesday, 28 October

Clear. High 51°, low 31°.

Pressure30.18 inHg

Wind7.1 mph SW

Humidity23%

Visibility—

Dew point9°

Thu, 2953° / 35°

53 °

Spring Valley, Thursday, 29 October

Overcast. High 53°, low 35°.

Pressure30.03 inHg

Wind13.8 mph W

Humidity24%

Visibility—

Dew point14°

Fri, 3053° / 37°

53 °

Spring Valley, Friday, 30 October

Overcast. High 53°, low 37°.

Pressure29.83 inHg

Wind20.3 mph W

Humidity27%

Visibility—

Dew point17°

Sat, 3149° / 36°

49 °

Spring Valley, Saturday, 31 October

Partly cloudy. High 49°, low 36°.

Pressure29.74 inHg

Wind24.3 mph W

Humidity29%

Visibility—

Dew point16°

Sun, 0153° / 34°

53 °

Spring Valley, Sunday, 1 November

Partly cloudy. High 53°, low 34°.

Pressure30.00 inHg

Wind17.4 mph W

Humidity23%

Visibility—

Dew point11°

Mon, 0262° / 39°

62 °

Spring Valley, Monday, 2 November

Overcast. High 62°, low 39°.

Pressure30.21 inHg

Wind14.1 mph W

Humidity28%

Visibility—

Dew point21°

Tue, 0365° / 43°

65 °

Spring Valley, Tuesday, 3 November

Clear. High 65°, low 43°.

Pressure30.24 inHg

Wind8.7 mph SW

Humidity20%

Visibility—

Dew point18°

Wed, 0462° / 46°

62 °

Spring Valley, Wednesday, 4 November

Clear. High 62°, low 46°.

Pressure30.18 inHg

Wind10.4 mph W

Humidity28%

Visibility—

Dew point26°

Thu, 0556° / 43°

56 °

Spring Valley, Thursday, 5 November

Partly cloudy. High 56°, low 43°.

Pressure30.27 inHg

Wind4.3 mph SW

Humidity44%

Visibility—

Dew point33°

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

Fri, 0644° / 26°

0.03

44 °

Spring Valley, Friday, 6 November

Climate normal for this date — 60-year average.

Average high44°

Average low26°

Average precipitation0.03 in

Chance of precipitation22%

Record high64° (1999)

Record low-5° (1996)

Sat, 0744° / 25°

0.05

44 °

Spring Valley, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.05 in

Chance of precipitation20%

Record high64° (1999)

Record low-6° (2003)

Sun, 0842° / 24°

0.07

42 °

Spring Valley, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high42°

Average low24°

Average precipitation0.07 in

Chance of precipitation35%

Record high59° (2006)

Record low2° (2000)

Mon, 0942° / 23°

0.09

42 °

Spring Valley, Monday, 9 November

Climate normal for this date — 60-year average.

Average high42°

Average low23°

Average precipitation0.09 in

Chance of precipitation38%

Record high60° (2016)

Record low-3° (1966)

Tue, 1040° / 22°

0.06

40 °

Spring Valley, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high40°

Average low22°

Average precipitation0.06 in

Chance of precipitation37%

Record high59° (2005)

Record low3° (1985)

Wed, 1140° / 22°

0.04

40 °

Spring Valley, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high40°

Average low22°

Average precipitation0.04 in

Chance of precipitation20%

Record high60° (1999)

Record low-6° (2000)

Thu, 1240° / 21°

0.07

40 °

Spring Valley, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high40°

Average low21°

Average precipitation0.07 in

Chance of precipitation25%

Record high63° (1999)

Record low-4° (2000)

Fri, 1340° / 22°

0.04

40 °

Spring Valley, Friday, 13 November

Climate normal for this date — 60-year average.

Average high40°

Average low22°

Average precipitation0.04 in

Chance of precipitation32%

Record high61° (1999)

Record low-2° (1972)

Sat, 1439° / 21°

0.07

39 °

Spring Valley, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high39°

Average low21°

Average precipitation0.07 in

Chance of precipitation25%

Record high61° (1999)

Record low-8° (1978)

Sun, 1539° / 19°

0.02

39 °

Spring Valley, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high39°

Average low19°

Average precipitation0.02 in

Chance of precipitation12%

Record high63° (1999)

Record low-11° (1978)

Mon, 1639° / 20°

0.04

39 °

Spring Valley, Monday, 16 November

Climate normal for this date — 60-year average.

Average high39°

Average low20°

Average precipitation0.04 in

Chance of precipitation23%

Record high61° (1999)

Record low-5° (2014)

Tue, 1738° / 19°

0.06

38 °

Spring Valley, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high38°

Average low19°

Average precipitation0.06 in

Chance of precipitation35%

Record high57° (1999)

Record low-5° (2000)

Wed, 1837° / 19°

0.06

37 °

Spring Valley, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high37°

Average low19°

Average precipitation0.06 in

Chance of precipitation30%

Record high57° (2008)

Record low-9° (2000)

Thu, 1937° / 18°

0.04

37 °

Spring Valley, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high37°

Average low18°

Average precipitation0.04 in

Chance of precipitation22%

Record high56° (2007)

Record low-9° (2022)

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 Spring Valley, WY 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 Spring Valley, WY 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.