As of 03:43 MDT

Weather in Spring Valley, WY

48°

Spring Valley, Tuesday, 20 October, 03:43

Partly cloudy. Feels like 44°. High 58°, low 42°.

Pressure30.09 inHg

Wind7.7 mph SW

Humidity75%

Visibility0.7 mi

Dew point40°

See detailed hourly forecast

Monthly outlook for Spring Valley, WY: average high 51.5°, average low 35.5°. That is 1.9° above the climate normal for October. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 21 October (60.2°), the coolest 28 October (26.8°).

51.5°/35.5°

Average high / low

+1.9°

Above normal

5 / 4

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
20 October – 29 October	51.6°	50.3°	+0.7°
30 October – 8 November	51.4°	44.1°	+4°
9 November – 18 November	at normal	39.3°	—

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).

Wed, 2160° / 37°

0.03

60 °

Spring Valley, Wednesday, 21 October

Light rain. High 60°, low 37°.

Pressure30.12 inHg

Wind7.8 mph NE

Humidity54%

Visibility6.2 mi

Dew point38°

Thu, 2255° / 40°

0.11

55 °

Spring Valley, Thursday, 22 October

Rain. High 55°, low 40°.

Pressure30.03 inHg

Wind8.2 mph NE

Humidity65%

Visibility6.2 mi

Dew point42°

Fri, 2349° / 38°

0.18

49 °

Spring Valley, Friday, 23 October

Light rain. High 49°, low 38°.

Pressure29.80 inHg

Wind20.9 mph SW

Humidity51%

Visibility5.7 mi

Dew point32°

Sat, 2444° / 36°

0.04

44 °

Spring Valley, Saturday, 24 October

Light rain. High 44°, low 36°.

Pressure30.24 inHg

Wind13 mph SW

Humidity70%

Visibility—

Dew point31°

Sun, 2549° / 28°

49 °

Spring Valley, Sunday, 25 October

Clear. High 49°, low 28°.

Pressure30.27 inHg

Wind8.2 mph NE

Humidity67%

Visibility—

Dew point30°

Mon, 2656° / 36°

56 °

Spring Valley, Monday, 26 October

Clear. High 56°, low 36°.

Pressure30.12 inHg

Wind8.5 mph W

Humidity36%

Visibility—

Dew point24°

Tue, 2744° / 31°

44 °

Spring Valley, Tuesday, 27 October

Overcast. High 44°, low 31°.

Pressure30.36 inHg

Wind24 mph E

Humidity54%

Visibility—

Dew point22°

Wed, 2848° / 27°

48 °

Spring Valley, Wednesday, 28 October

Partly cloudy. High 48°, low 27°.

Pressure30.18 inHg

Wind9.1 mph NE

Humidity42%

Visibility—

Dew point19°

Thu, 2953° / 41°

0.04

53 °

Spring Valley, Thursday, 29 October

Light rain. High 53°, low 41°.

Pressure29.88 inHg

Wind15.9 mph W

Humidity45%

Visibility—

Dew point29°

Fri, 3053° / 36°

53 °

Spring Valley, Friday, 30 October

Clear. High 53°, low 36°.

Pressure29.85 inHg

Wind13 mph W

Humidity41%

Visibility—

Dew point26°

Sat, 3142° / 36°

0.28

42 °

Spring Valley, Saturday, 31 October

Snow. High 42°, low 36°.

Pressure29.85 inHg

Wind15 mph W

Humidity73%

Visibility—

Dew point34°

Sun, 0147° / 32°

47 °

Spring Valley, Sunday, 1 November

Overcast. High 47°, low 32°.

Pressure30.15 inHg

Wind17.7 mph W

Humidity53%

Visibility—

Dew point27°

Mon, 0253° / 35°

53 °

Spring Valley, Monday, 2 November

Clear. High 53°, low 35°.

Pressure30.33 inHg

Wind8 mph SW

Humidity42%

Visibility—

Dew point26°

Tue, 0357° / 36°

57 °

Spring Valley, Tuesday, 3 November

Mostly clear. High 57°, low 36°.

Pressure30.15 inHg

Wind5.9 mph E

Humidity33%

Visibility—

Dew point22°

Wed, 0455° / 40°

55 °

Spring Valley, Wednesday, 4 November

Overcast. High 55°, low 40°.

Pressure29.74 inHg

Wind10.2 mph SW

Humidity56%

Visibility—

Dew point35°

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

Thu, 0545° / 26°

0.04

45 °

Spring Valley, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.04 in

Chance of precipitation28%

Record high63° (1980)

Record low-1° (1961)

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)

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.