# Deerfield, South Dakota

Deerfield is an unincorporated community in Pennington County, in the U.S. state of South Dakota.

## History

A post office called Deerfield was established in 1892, and remained in operation until 1954. The community was so named on account of the area being a favorite hunting ground of deer.

## Climate

Climate data for Deerfield 3 SE, South Dakota, 1981–2010 normals, extremes 1948–2003: 6,060 ft (1,847 m) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 58 (14) | 62 (17) | 68 (20) | 78 (26) | 84 (29) | 98 (37) | 97 (36) | 95 (35) | 90 (32) | 82 (28) | 72 (22) | 63 (17) | 98 (37) |
| Mean maximum °F (°C) | 52.2 (11.2) | 54.0 (12.2) | 60.4 (15.8) | 68.9 (20.5) | 76.6 (24.8) | 83.3 (28.5) | 88.2 (31.2) | 87.0 (30.6) | 82.1 (27.8) | 71.7 (22.1) | 58.5 (14.7) | 53.2 (11.8) | 88.1 (31.2) |
| Mean daily maximum °F (°C) | 32.8 (0.4) | 34.2 (1.2) | 41.3 (5.2) | 48.7 (9.3) | 58.8 (14.9) | 68.5 (20.3) | 76.8 (24.9) | 75.5 (24.2) | 65.8 (18.8) | 52.8 (11.6) | 40.8 (4.9) | 32.3 (0.2) | 52.4 (11.3) |
| Daily mean °F (°C) | 19.1 (−7.2) | 19.3 (−7.1) | 27.4 (−2.6) | 35.4 (1.9) | 45.1 (7.3) | 54.2 (12.3) | 60.9 (16.1) | 59.0 (15.0) | 49.3 (9.6) | 38.3 (3.5) | 26.8 (−2.9) | 18.7 (−7.4) | 37.8 (3.2) |
| Mean daily minimum °F (°C) | 5.4 (−14.8) | 4.5 (−15.3) | 13.6 (−10.2) | 22.2 (−5.4) | 31.5 (−0.3) | 39.9 (4.4) | 44.9 (7.2) | 42.6 (5.9) | 32.9 (0.5) | 23.8 (−4.6) | 12.9 (−10.6) | 5.0 (−15.0) | 23.3 (−4.8) |
| Mean minimum °F (°C) | −17.2 (−27.3) | −18.0 (−27.8) | −10.8 (−23.8) | 1.6 (−16.9) | 17.1 (−8.3) | 27.7 (−2.4) | 34.1 (1.2) | 32.0 (0.0) | 18.1 (−7.7) | 5.2 (−14.9) | −7.1 (−21.7) | −18.2 (−27.9) | −28.7 (−33.7) |
| Record low °F (°C) | −40 (−40) | −42 (−41) | −34 (−37) | −22 (−30) | 6 (−14) | 14 (−10) | 23 (−5) | 20 (−7) | 5 (−15) | −16 (−27) | −29 (−34) | −45 (−43) | −45 (−43) |
| Average precipitation inches (mm) | 0.53 (13) | 0.66 (17) | 1.05 (27) | 2.04 (52) | 3.53 (90) | 2.95 (75) | 2.95 (75) | 2.43 (62) | 1.70 (43) | 1.57 (40) | 0.87 (22) | 0.58 (15) | 20.86 (531) |
| Average snowfall inches (cm) | 9.8 (25) | 12.1 (31) | 13.9 (35) | 20.3 (52) | 2.6 (6.6) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 1.4 (3.6) | 10.9 (28) | 12.3 (31) | 11.7 (30) | 95 (242.2) |
| Average precipitation days (≥ 0.01 in) | 6.3 | 6.1 | 8.1 | 10.3 | 12.7 | 13.3 | 12.9 | 10.3 | 7.2 | 7.3 | 6.8 | 5.7 | 107 |
| Average snowy days (≥ 0.1 in) | 5.2 | 5.1 | 6.1 | 5.5 | 1.0 | 0.2 | 0.0 | 0.0 | 0.7 | 2.9 | 4.6 | 5.4 | 36.7 |
| Source 1: NOAA ||||||||||||||
| Source 2: XMACIS2 ||||||||||||||
Blind Park is a SNOTEL weather station 7.8 miles (12.6 km) northwest of Deerfield, at an altitude of 6890 ft (2100 m).
Climate data for Blind Park, South Dakota, 1991–2020 normals, extremes 1990–present: 6890ft (2100m) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 62 (17) | 61 (16) | 66 (19) | 73 (23) | 85 (29) | 88 (31) | 91 (33) | 92 (33) | 88 (31) | 79 (26) | 65 (18) | 58 (14) | 92 (33) |
| Mean maximum °F (°C) | 50.8 (10.4) | 51.4 (10.8) | 59.5 (15.3) | 66.0 (18.9) | 74.7 (23.7) | 81.3 (27.4) | 86.0 (30.0) | 84.8 (29.3) | 80.2 (26.8) | 70.2 (21.2) | 57.5 (14.2) | 48.7 (9.3) | 87.1 (30.6) |
| Mean daily maximum °F (°C) | 31.4 (−0.3) | 33.6 (0.9) | 42.1 (5.6) | 47.3 (8.5) | 55.8 (13.2) | 66.3 (19.1) | 74.5 (23.6) | 73.4 (23.0) | 64.0 (17.8) | 49.5 (9.7) | 38.5 (3.6) | 30.9 (−0.6) | 50.6 (10.3) |
| Daily mean °F (°C) | 20.9 (−6.2) | 21.6 (−5.8) | 29.7 (−1.3) | 35.6 (2.0) | 44.3 (6.8) | 53.9 (12.2) | 60.9 (16.1) | 59.6 (15.3) | 51.0 (10.6) | 38.2 (3.4) | 28.1 (−2.2) | 20.7 (−6.3) | 38.7 (3.7) |
| Mean daily minimum °F (°C) | 10.3 (−12.1) | 9.6 (−12.4) | 17.4 (−8.1) | 23.8 (−4.6) | 32.6 (0.3) | 41.3 (5.2) | 47.4 (8.6) | 45.8 (7.7) | 38.1 (3.4) | 27.2 (−2.7) | 17.7 (−7.9) | 10.4 (−12.0) | 26.8 (−2.9) |
| Mean minimum °F (°C) | −13.5 (−25.3) | −13.7 (−25.4) | −2.6 (−19.2) | 7.3 (−13.7) | 19.6 (−6.9) | 30.7 (−0.7) | 38.4 (3.6) | 35.1 (1.7) | 25.2 (−3.8) | 8.6 (−13.0) | −2.7 (−19.3) | −11.2 (−24.0) | −22.5 (−30.3) |
| Record low °F (°C) | −37 (−38) | −35 (−37) | −21 (−29) | −11 (−24) | 9 (−13) | 21 (−6) | 30 (−1) | 25 (−4) | 8 (−13) | −12 (−24) | −17 (−27) | −33 (−36) | −37 (−38) |
| Average precipitation inches (mm) | 1.77 (45) | 1.73 (44) | 1.79 (45) | 2.89 (73) | 4.08 (104) | 3.10 (79) | 2.57 (65) | 1.72 (44) | 1.58 (40) | 2.45 (62) | 1.80 (46) | 1.49 (38) | 26.97 (685) |
| Source 1: XMACIS2 ||||||||||||||
| Source 2: NOAA (Precipitation) ||||||||||||||