The standard 30-year normal is May 21, Calendar Day 141.
The average for the last 10 years, 2001-2010 is Calendar Day 125 or 16 days earlier than normal.
The 124 year average is day 137 as noted by the horizontal black line in the graph
Year 2010, June 1, Calendar Day 152; or, 11 days later than normal.

Climatology of Lincoln's First 90 degree or higher temperature - Ranked from earliest to latest (1887-2010)

year

month

Day

DOY

year

month

Day

DOY

1910

Mar

22

81

2006

May

19

139

1907

Mar

25

84

1933

May

19

139

1895

Mar

28

87

1925

May

20

140

2003

Apr

1

91

1948

May

20

141

LY

1929

Apr

4

94

1921

May

20

140

1893

Apr

6

96

1973

May

21

141

1972

Apr

6

97

LY

2005

May

21

141

1930

Apr

10

100

1950

May

23

143

1896

Apr

10

101

LY

1926

May

23

143

1996

Apr

11

102

LY

1954

May

23

143

1940

Apr

14

105

LY

1953

May

24

144

1924

Apr

15

106

LY

1914

May

24

144

2002

Apr

15

105

1931

May

26

146

1964

Apr

16

107

LY

1983

May

27

147

2004

Apr

17

108

LY

1991

May

28

148

1994

Apr

18

108

1913

May

28

148

1987

Apr

19

109

1979

May

28

148

1902

Apr

20

110

1937

May

28

148

1980

Apr

21

112

LY

1969

May

28

148

1989

Apr

21

111

1942

May

29

149

1960

Apr

22

113

LY

1943

May

29

149

2009

Apr

24

114

1951

May

31

151

1906

Apr

24

114

2010

Jun

1

152

 

1901

Apr

26

116

1986

Jun

1

152

1915

Apr

28

118

1898

Jun

2

153

1894

Apr

28

118

1905

Jun

3

154

2007

Apr

29

119

1958

Jun

3

154

1891

Apr

29

119

1999

Jun

4

155

1992

Apr

30

121

LY

1938

Jun

5

156

1965

Apr

30

120

1957

Jun

5

156

1887

May

1

121

1981

Jun

5

156

1959

May

1

121

1971

Jun

5

156

2001

May

1

121

1982

Jun

6

157

1968

May

1

122

LY

1946

Jun

6

157

1955

May

2

122

1900

Jun

6

157

1928

May

2

123

LY

2008

Jun

7

159

LY

1949

May

3

123

1984

Jun

7

159

LY

1952

May

4

125

LY

1920

Jun

7

159

LY

1966

May

5

125

1922

Jun

8

159

1936

May

5

126

LY

1927

Jun

8

159

1909

May

5

125

1985

Jun

8

159

1934

May

6

126

1947

Jun

9

160

1916

May

6

127

LY

1892

Jun

10

162

LY

1962

May

7

127

1961

Jun

10

161

1918

May

8

128

1976

Jun

10

162

LY

1963

May

8

128

1990

Jun

11

162

1911

May

10

130

1978

Jun

11

162

2000

May

11

132

LY

1899

Jun

12

163

1956

May

12

133

LY

1897

Jun

13

164

1932

May

13

134

LY

1974

Jun

14

165

1941

May

14

134

1888

Jun

15

167

LY

1988

May

14

135

LY

1993

Jun

16

167

1944

May

15

136

LY

1995

Jun

16

167

1977

May

16

136

1923

Jun

17

168

1997

May

16

136

1889

Jun

18

169

1939

May

16

136

1919

Jun

19

170

1967

May

18

138

1908

Jun

21

173

LY

1998

May

18

138

1904

Jun

23

175

LY

1917

May

18

138

1890

Jun

23

174

1970

May

18

138

1935

Jun

24

175

1912

May

19

140

LY

1945

Jun

27

178

1975

May

19

139

1903

Jun

29

180

DOY = Day of the Year or Calendar Day.

Earliest first 90 F or higher: March 22
Latest first 90 F or higher: June 29
Average first 90 F or higher: May 19
Year 2010 first 90 F or higher: June 1
 

     

NOTE:  LY = Leap Year. For example, May 19 is Calendar day 139 in 1975 but in Year 1976, a leap year, it was day 140.

     

Climatology of Lincoln's First 90 degree or higher temperature - By Year, 1887-2010

year

month

Day

DOY

year

month

Day

DOY

2010

Jun

1

152

   

1948

May

20

141

LY

2009

Apr

24

114

 

1947

Jun

9

160

2008

Jun

7

159

LY

1946

Jun

6

157

2007

Apr

29

119

1945

Jun

27

178

2006

May

19

139

1944

May

15

136

LY

2005

May

21

141

1943

May

29

149

2004

Apr

17

108

LY

1942

May

29

149

2003

Apr

1

91

1941

May

14

134

2002

Apr

15

105

1940

Apr

14

105

LY

2001

May

1

121

1939

May

16

136

2000

May

11

132

LY

1938

Jun

5

156

1999

Jun

4

155

1937

May

28

148

1998

May

18

138

1936

May

5

126

LY

1997

May

16

136

1935

Jun

24

175

1996

Apr

11

102

LY

1934

May

6

126

1995

Jun

16

167

1933

May

19

139

1994

Apr

18

108

1932

May

13

134

LY

1993

Jun

16

167

1931

May

26

146

1992

Apr

30

121

LY

1930

Apr

10

100

1991

May

28

148

1929

Apr

4

94

1990

Jun

11

162

1928

May

2

123

LY

1989

Apr

21

111

1927

Jun

8

159

1988

May

14

135

LY

1926

May

23

143

1987

Apr

19

109

1925

May

20

140

1986

Jun

1

152

1924

Apr

15

106

LY

1985

Jun

8

159

1923

Jun

17

168

1984

Jun

7

159

LY

1922

Jun

8

159

1983

May

27

147

1921

May

20

140

1982

Jun

6

157

1920

Jun

7

159

LY

1981

Jun

5

156

1919

Jun

19

170

1980

Apr

21

112

LY

1918

May

8

128

1979

May

28

148

1917

May

18

138

1978

Jun

11

162

1916

May

6

127

LY

1977

May

16

136

1915

Apr

28

118

1976

Jun

10

162

LY

1914

May

24

144

1975

May

19

139

1913

May

28

148

1974

Jun

14

165

1912

May

19

140

LY

1973

May

21

141

1911

May

10

130

1972

Apr

6

97

LY

1910

Mar

22

81

1971

Jun

5

156

1909

May

5

125

1970

May

18

138

1908

Jun

21

173

LY

1969

May

28

148

1907

Mar

25

84

1968

May

1

122

LY

1906

Apr

24

114

1967

May

18

138

1905

Jun

3

154

1966

May

5

125

1904

Jun

23

175

LY

1965

Apr

30

120

1903

Jun

29

180

1964

Apr

16

107

LY

1902

Apr

20

110

1963

May

8

128

1901

Apr

26

116

1962

May

7

127

1900

Jun

6

157

1961

Jun

10

161

1899

Jun

12

163

1960

Apr

22

113

LY

1898

Jun

2

153

1959

May

1

121

1897

Jun

13

164

1958

Jun

3

154

1896

Apr

10

101

LY

1957

Jun

5

156

1895

Mar

28

87

1956

May

12

133

LY

1894

Apr

28

118

1955

May

2

122

1893

Apr

6

96

1954

May

23

143

1892

Jun

10

162

LY

1953

May

24

144

1891

Apr

29

119

1952

May

4

125

LY

1890

Jun

23

174

1951

May

31

151

1889

Jun

18

169

1950

May

23

143

1888

Jun

15

167

LY

1949

May

3

123

1887

May

1

121

 

 

Leap years are years with 366 days, instead of the usual 365. Leap years are necessary because the actual length of a year is 365.242 days, not 365 days, as commonly stated. Basically, leap years occur every 4 years, and years that are evenly divisible by 4 (2004, for example) have 366 days. This extra day is added to the calendar on February 29th.

However, there is one exception to the leap year rule involving century years, like the year 1900. Since the year is slightly less than 365.25 days long, adding an extra day every 4 years results in about 3 extra days being added over a period of 400 years. For this reason, only 1 out of every 4 century years is considered as a leap year. Century years are only considered as leap years if they are evenly divisible by 400. Therefore, 1700, 1800, 1900 were not leap years, and 2100 will not be a leap year. But 1600 and 2000 were leap years, because those year numbers are evenly divisible by 400.

 

ORDINAL DAY OF YEAR (DOY) CALENDAR
*Add 1 to unshaded values during leap years.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

1

1

32

60

91

121

152

182

213

244

274

305

335

2

2

33

61

92

122

153

183

214

245

275

306

336

3

3

34

62

93

123

154

184

215

246

276

307

337

4

4

35

63

94

124

155

185

216

247

277

308

338

5

5

36

64

95

125

156

186

217

248

278

309

339

6

6

37

65

96

126

157

187

218

249

279

310

340

7

7

38

66

97

127

158

188

219

250

280

311

341

8

8

39

67

98

128

159

189

220

251

281

312

342

9

9

40

68

99

129

160

190

221

252

282

313

343

10

10

41

69

100

130

161

191

222

253

283

314

344

11

11

42

70

101

131

162

192

223

254

284

315

345

12

12

43

71

102

132

163

193

224

255

285

316

346

13

13

44

72

103

133

164

194

225

256

286

317

347

14

14

45

73

104

134

165

195

226

257

287

318

348

15

15

46

74

105

135

166

196

227

258

288

319

349

16

16

47

75

106

136

167

197

228

259

289

320

350

17

17

48

76

107

137

168

198

229

260

290

321

351

18

18

49

77

108

138

169

199

230

261

291

322

352

19

19

50

78

109

139

170

200

231

262

292

323

353

20

20

51

79

110

140

171

201

232

263

293

324

354

21

21

52

80

111

141

172

202

233

264

294

325

355

22

22

53

81

112

142

173

203

234

265

295

326

356

23

23

54

82

113

143

174

204

235

266

296

327

357

24

24

55

83

114

144

175

205

236

267

297

328

358

25

25

56

84

115

145

176

206

237

268

298

329

359

26

26

57

85

116

146

177

207

238

269

299

330

360

27

27

58

86

117

147

178

208

239

270

300

331

361

28

28

59

87

118

148

179

209

240

271

301

332

362

29

29

60

88

119

149

180

210

241

272

302

333

363

30

30

89

120

150

181

211

242

273

303

334

364

31

31

90

151

212

243

304

365



               
Applied Climate Science 
School of Natural Resources