Western and Central Wyoming

Weather Forecast Office

Lander 2021 Annual Summary

...Highlights of 2021...

Annual - 5th warmest year at 47.4 degrees with 129 years of record (1892-2021).
37th Wettest year on record with14.92 inches, 113% of normal precipitation.
25th Least Snowiest year on record with 59 inches (67 percent of normal).
The peak wind gust for the year was 79 mph which occurred on August 15th.
Monthly Temperature: 2nd warmest June, 7th warmest July, 10th warmest September, 3rd warmest November and 4th warmest December on record.
Monthly Precipitation: 10th driest January, 10th driest February, 9th wettest March and 3rd wettest October on record.
Monthly Snowfall: 10th least snowiest January and 8th least snowiest February on record.

Temperature

Precipitation

Snow

Winds

Temperature Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average High	37.8	38.2	48.7	53.7	62.3	79.1	91	87.6	79.6	62.4	38.4	28.7	59.0
Mean High (1991-2020 Normals)	32.8	36.6	48.6	56.2	66.1	78	87.7	85.8	74.6	58.9	44.3	32.9	58.5
Average Low	13.4	10.8	22.1	26.9	38.3	47.7	58.7	56.6	49.5	34.7	15.2	4.1	31.5
Mean Low (1991-2020 Normals)	9.8	13.3	23.4	30.3	39.4	47.7	55.2	53.8	44.6	32	19.9	10.2	31.6
Average Temperature	25.6	24.5	35.4	40.3	50.3	63.4	74.9	72.1	64.5	48.6	23.8	16.4	45.0
Mean Temp (1991-2020 Normals)	21.3	25	36	43.2	52.8	62.8	71.5	69.8	59.6	45.4	32.1	21.6	45.1
Departure from Normal	4.3	-0.5	-0.6	-2.9	-2.5	0.6	3.4	2.3	4.9	3.2	-8.3	-5.2	-0.1
Rank: Coldest to Warmest 131 years of record (P.O.R 1892-2022)	110	64	82	27	37	87	126	117	128	103	11	28	91

Highest Daily Maximum	54	62	73	72	81	92	100	99	99	76	66	51	100
Date of Occurrence	12	10	27	8,21	26	17,28	17	10	4	20	1	27	7/17
Lowest Daily Minimum	-6	-10	-15	11	29	34	51	50	40	19	-3	-32	-32
Date of Occurrence	6	24	10	13,14	10,22	15	2	15	10,11	26	30	22	12/22
Number of Days with:
Maximum >= 90°	0	0	0	0	0	5	23	10	8	0	0	0	46
Maximum <= 32°	7	10	7	2	0	0	0	0	0	0	8	17	51
Minimum <= 32°	31	28	26	25	4	0	0	0	0	10	29	31	184
Minimum <= 0°	3	7	3	0	0	0	0	0	0	0	1	8	22
Record High Temperatures Set or Tied	0	0	2	0	0	0	1	1	7	0	0	0	11
Record Low Temperatures Set or Tied	0	0	1	0	1	0	0	0	0	0	0	0	2

Temperature Ranks and Records:

Daily Records:

Record High Temperatures:

  March: 65 on the 20th and 72 on the 26th.

  July: 100 on the 17th.
August: 99 on the 10th.

  September: 98 on the 1st, 95 on the 3rd, 99 on the 4th (new monthly high), 96 on the 5th (tie), 94 on the 6th, 97 on the 7th and 92 on the 8th (tie).



Record Low Temperatures:

March: -15 on the 10th.

May: 29 on the 22nd.

Top Ten Warmest Months of July on Record
Rank	Year	Average Temperature °F
1	2003	76
2	2006	75.9
3	2007	75.7
4	2012	75.5
5	1988	75.3
6	2022, 2002	74.9
7	2021, 1954	74.8
9	1966	74.7
10	2001	74.4

Top Ten Warmest Months of September on Record
Rank	Year	Average Temperature °F
1	2015	65.3
2	1990	64.8
3	2022	64.5
4	1979, 1969	63.8
5	1963	63.5
6	1998	63.4
7	2012	63.2
8	2001, 1952	63.1
9	1994	62.8
10	2021	62.7

Top Ten Warmest Years on Record
Rank	Year	Average Temperature °F
1	2012	49.0
2	1988, 1981	47.7
4	1934	47.6
5	1994, 2006	47.5
7	2021	47.4
8	1954	47.2
9	1999	47.0
10	2015	46.9
40	2022	45.0

Top Ten Coldest Years on Record
Rank	Year	Average Temperature °F
1	1912	39.9
2	1944	40.1
3	1920	40.2
4	1916, 1898	40.9
6	1895	41.0
7	1924	41.1
8	1913, 1899	41.2
9	1923, 1905	41.2
10	1993, 1929, 1922	41.4
91	2022	45.0


Average Annual Temperature for Period of Record - Click on Graph to Enlarge

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Lander, Temperature, 2022, Summary

Precipitation Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	0.71	0.74	1.89	1.34	4.13	T	0.38	0.53	1.5	0.31	1.07	1.32	13.92
Mean Precip (1981-2010 Normals)	0.51	0.7	1.29	2.07	2.68	1.08	0.59	0.52	0.98	1.4	0.78	0.63	13.23
Departure from Normal	0.20	0.04	0.6	-0.73	1.45	-1.08	-0.21	0.01	0.52	-1.09	0.29	0.69	0.69
Percent of Normal	139	106	147	65	145	0	64	102	153	22	137	210	105
Rank - Driest to Wettest 131 years (P.O.R 1892-2022)	101	79	109	43	106	3	53	80	101	15	95	117	76
Greatest 24-HR Total	0.33	0.41	0.54	0.69	0.88	T	0.21	0.25	0.72	0.27	0.35	0.76	0.88
Dates of Occurrence	5	15-16	6	22	3	Several	27	24-25	14-15	1	3	12-13	5/3
Number of Days with:
Precipitation >= 0.01	6	9	8	10	11	0	2	7	7	3	6	4	73
Precipitation >= 0.10	3	3	6	4	7	0	2	1	5	1	5	4	41
Precipitation >= 1.00	0	0	0	0	0	0	0	0	0	0	0	0	0
Days with Thunderstorms	0	0	0	0	2	3	7	5	3	0	0	0	20
Daily Precipitation Records Set or Tied	1	1	1	0	0	0	0	1	1	0	0	0	5

Precipitation Ranks and Records:

One Day Precipitation Records (inches):

January: 0.33" on the 5th.

February: 0.27" on the 16th.

March: 0.41" on the 20th.

August: 0.24 on the 24th.

September: 0.50" on the 15th.

Top Ten Driest Months of June on Record
Rank	Year	Precipitation (inches)
1	1956, 1971	0
2	2022	Trace
3	1933	0.02
4	2006	0.03
5	1942, 1981, 2012	0.04
6	1924, 1980, 2013	0.05
7	1954	0.09
8	1896, 1930	0.12
9	1917, 1929	0.13
10	1906, 1938	0.14

Top Ten Driest Years on Record
Rank	Year	Precipitation (inches)
1	2001	5.30
2	1954	6.41
3	2012	6.60
4	1902	7.25
5	2020	7.33
6	2006	7.42
7	1988	7.63
8	1939	7.95
9	2002	8.09
10	1914	8.32
56	2022	13.92

Top Ten Wettest Years on Record
Rank	Year	Precipitation (inches)
1	1957	21.89
2	1923	21.56
3	2016	21.29
4	1941	20.66
5	1912	20.00
6	1947	19.70
7	1995	19.68
8	1944	19.57
9	1973	19.30
10	1908	19.22
76	2022	13.92


Annual Precipitation for Period of Record - Click on Graph to Enlarge

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Snow Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	9.9	10.5	21.2	2.9	T	0	0	0	0	T	14.2	14.8	73.5
Average Snowfall	8.2	12.1	14.4	16.4	4.5	0.1	0	0	1.5	10.5	10.6	9.3	87.6
Departure from Normal	1.7	-1.6	6.8	-13.5	0	-0.1	0.0	0.0	-1.5	-10.5	3.6	5.5	-14.1
Percent of Normal	121	87	147	12	0	0	0	0	0	0	134	159	84
Rank - Least to Most 131 Years (P.O.R 1892-2022)	102	83	103	18	37	NA	NA	NA	67	21	98	109	49

Greatest 24-HR Total	3.4	4	6.1	1	T	0	0	0	0	T	3.6	5.7	5.7
Dates of Occurrence	27	16	6	23	9,20	NA	NA	NA	NA	23	28	21	12/21
Number of Days with:
Snowfall >= 1.0 inch	3	4	6	1	0	0	0	0	0	0	6	4	24
Daily Snowfall Records Set or Tied	0	1	1	0	0	0	0	0	0	0	0	0	2
* 35 months of May with a trace or less of snowfall on record * 64 months of September on record with no snowfall.

Snowfall Ranks and Records:

One Day Snowfall Records (inches):

February: 4.0" fell on the 16th.

March: 3.7" fell on the 5th

Top Ten Snowiest Years on Record
Rank	Year	Snowfall (inches)
1	1973	199.9
2	1975	160.7
3	1983	159.6
4	1967	154.6
5	1959	150.4
6	1971	148.3
7	2013	138.0
8	1978	128.1
9	1920	127.9
10	1892	125.1
83	2022	73.5



Annual and Seasonal Snowfall for Period of Record - Click on Graph to Enlarge

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Wind Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average Speed (MPH)	5.1	5.7	6	8.2	8	7.9	8.1	6.2	6.2	4.6	5.5	5.8	6
Maximum 3-sec Gust	58	47	50	58	52	56	74	52	55	70	59	66	74
Direction (degrees)	350	350	200	310	250	240	310	300	210	200	210	230	310
Date of Occurrence	31	5	28	5	16	17	24	11	13	22	7	1	7/24
Number of Days with:
2-Minute Wind >50 mph	0	0	0	0	0	0	0	0	0	0	0	0	0
Peak Wind >50 mph	2	0	1	4	2	3	4	1	3	1	2	2	25
Peak Wind >65 mph	0	0	0	0	0	0	1	0	0	1	0	0	2

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