The tables and charts below show selected monthly and yearly summary statistics for weather data collected at MLBS since mid-1994.  See Metadata for raw data collection parameters, and periods of missing data.  Statistics are calculated directly from data for that month (not from daily means). 

Click here for the SAS code used to generate summary data used in tables and charts. Charts made in Excel.
*PAR is in quanta of light in the "photosynthetically active" wavelengths. Units = micromoles/s/m^2.

1994:

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1995:

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Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	12.3	-19.4	-1.9	183	83	2.83	120
February	14.3	-20.2	-2.7	89	74	3.38	198
March	18.8	-11.9	4.5	56	64	2.38	321
April	24.5	-8.4	9.0	50	64	2.64	375
May	23.9	2.1	12.6	129	80	2.20	388
June	25.0	7.8	16.6	188	87	1.06	368
July	29.2	8.9	19.5	64	83	1.04	464
August	29.1	12.0	19.5	43	87	0.91	379
September	23.4	2.3	13.7	89	87	0.97	275
October	22.6	-0.6	10.2	126	78	1.95	244
November	15.8	-10.4	1.1	112	80	2.95	158
December	13.1	-20.2	-3.1	62	78	3.07	132
The Year	29.2	-20.2	8.3	1191	79	2.11	285

 

1996:

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Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	12.3	-17.2	-3.5	181	83	2.58	123
February	17.7	-23.8	-2.0	55	79	3.46	176
March	14.4	-18.9	-0.2	126	74	2.88	238
April	22.3	-6.7	7.1	87	72	3.24	304
May	28.3	-2.2	14.2	134	76	2.34	389
June	26.2	7.4	17.6	141	84	0.88	430
July	26.0	6.8	17.1	70	84	1.01	395
August	26.0	11.0	17.1	128	91	0.46	318
September	23.1	3.9	13.5	246	91	0.58	218
October	20.6	-1.4	9.2	54	84	0.72	168
November	17.1	-11.3	0.7	232	84	0.75	110
December	14.0	-16.9	1.2	73	84	1.92	89
The Year	28.3	-23.8	6.9	1527	82	1.80	237

 

1997:

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Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	14.5	-22.4	-3.2	63	77	3.36	128
February	13.3	-10.6	1.3	48	81	2.39	117
March	16.8	-10.1	4.8	142	74	2.84	260
April	19.4	-8.6	5.7	68	65	2.11	334
May	23.7	-1.3	10.1	99	73	2.58	320
June	25.3	4.1	15.1	87	88	2.02	287
July	26.7	8.4	18.6	71	87	1.42	330
August	27.2	6.6	17.1	42	88	1.45	275
September	25.9	3.2	14.1	74	88	1.57	214
October	22.7	-4.9	9.0	40	84	1.84	174
November	12.3	-10.0	1.3	92	87	1.91	78
December	10.4	-12.3	-1.5	34	85	2.17	71
The Year	27.2	-22.4	7.8	970	82	2.11	217

 

1998:

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Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	14.9	-14.1	0.7	186	89	1.87	82
February	15.1	-8.9	0.5	68	89	1.78	120
March	22.5	-16.1	2.0	147	85	2.48	191
April	21.7	-3.8	8.5	168	73	2.37	259
May	25.9	3.6	14.5	162	86	1.49	284
June	26.6	3.30	17.0	177	91	1.41	271
July	27.5	10.8	18.6	36	90	0.76	291
August	26.5	10.0	18.6	112	85	0.60	307
September	27.4	5.2	17.2	48	82	0.58	279
October	20.6	-1.5	10.4	74	79	0.66	174
November	16.6	-6.5	5.3	42	77	2.40	124
December	16.7	-14.8	2.0	75	82	2.20	96
The Year	27.5	-16.1	9.6	1295	84	1.56	206

 

1999:

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Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	16.9	-17.6	-0.0	98	82	2.91	103
February	15.0	-14.4	0.3	70	79	2.58	157
March	16.3	-13.4	0.5	62	71	2.74	229
April	23.6	-0.9	9.4	100	77	2.79	248
May	22.4	2.2	13.2	131	72	2.26	356
June	28.3	3.7	17.1	11	88	1.82	323
July	31.2	10.1	20.3	117	90	1.61	296
August	27.2	8.8	17.9	69	86	1.51	321
September	23.9	1.9	14.3	181	86	1.66	236
October	18.7	-2.6	9.0	74	84	1.84	203
November	18.2	-9.1	6.7	100	79	2.62	162
December	14.4	-14.9	1.0	64	75	2.48	117
The Year	31.2	-17.6	9.2	1175	81	2.24	229

   

2000:

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Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	14.5	-20.7	-3.2	39	79	2.84	127
February	17.7	-10.9	1.4	73	80	2.6	191
March	21.5	-9.4	5.6	85	71	2.5	256
April	20.6	-6.8	7.3	125	82	2.5	234
May	25.6	1.8	15.0	72	79	2.0	336
June	25.6	6.4	17.6	127	91	1.5	314
July	24.7	10.1	17.2	120	94	1.5	275
August	25.6	10.1	17.2	124	95	1.5	265
September	23.1	0.0	13.9	118	95	1.7	238
October	22.4	-4.3	10.4	1	76	1.8	239
November	18.7	-13.2	2.3	84	82	2.4	131
December	8.6	-17.6	-5.6	35	84	2.6	100
The Year	25.6	-20.7	8.3	1004	84	2.1	226

2001:

Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	9.0	-18.0	-2.6	58	81	2.5	122
February	15.0	-13.6	1.2	42	79	2.6	190
March	11.5	-12.6	-0.3	80	81	3.1	229
April	24.6	-7.4	10.1	30	74	2.4	335
May	22.8	2.6	13.0	242	83	1.8	301
June	25.1	7.7	17.0	56	89	1.5	363
July	24.7	8.3	17.3	169	92	1.5	309
August	26.8	9.5	18.7	40	94	1.2	321
September	22.7	1.8	13.2	64	92	1.4	269
October	22.3	-6.6	8.8	46	77	2.1	239
November	18.8	-5.2	7.8	30	73	2.0	170
December	20.0	-13.7	2.0	57	83	2.5	104
The Year	26.8	-18.0	8.8	915	83	2.0	246

2002:

Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	15.8	-15.6	-0.7	58	78	2.7	129
February	na	na	na	na	na	na	na
March	na	na	na	na	na	na	na
April	na	na	na	na	na	na	na
May	24.5	-2.4	12.2	30	81	2.1	360
June	26.8	7.8	17.6	89	89	1.6	322
July	25.8	11.5	19.1	125	94	1.3	282
August	27.1	8.4	18.7	35	90	1.4	289
September	26.0	5.5	16.6	131	91	1.4	236
October	22.7	-0.9	9.7	142	97	1.6	125
November	15.7	-10.0	2.3	126	90	2.1	108
December	10.8	-11.8	-1.7	91	88	1.7	94
The Year	na	na	na	na	na	na	na

2003:

Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	10.1	-19.9	-5.9	49	85	2.3	107
February	9.6	-14.9	-2.6	145	90	1.8	109
March	18.4	-8.7	5.4	67	83	2.0	216
April	22.0	-1.2	10.1	52	67	1.8	290
May	24.5	4.7	11.7	199	81	na	236
June	25.5	3.1	15.2	253	81	na	298
July	25.4	10.2	17.9	232	84	1.5	291
August	25.7	12.2	18.7	151	86	1.2	264
September	23.9	1.4	13.9	152	85	1.8	234
October	20.8	-4.6	8.6	62	76	2.1	173
November	23.1	-8.9	6.8	166	70	2.4	123
December	12.2	-14.4	-2.0	61	73	2.6	90
The Year	25.7	-19.9	8.2	1596	81	na	200

2004:

Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	15.0	-17.2	-4.2	68	76	2.9	101
February	na	na	na	na	na	na	na
March	na	na	na	na	na	na	na
April	na	na	na	na	na	na	na
May	23.0	7.6	14.7	49	84	1.3	273
June	24.1	7.6	16.1	113	87	1.2	263
July	24.3	9.7	18.1	95	87	1.3	304
August	25.1	6.6	16.6	80	87	1.2	385
September	24.3	5.8	15.0	366	87	1.9	260
October	20.0	0.5	10.7	79	84	1.5	207
November	21.3	-7.1	6.1	141	76	2.0	149
December	12.3	-23.3	-0.9	82	76	2.6	129
The Year	na	na	na	na	na	na	na

2005:

Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	14.5	-20.3	-0.8	87	83	2.3	114
February	12.5	-12.5	-0.5	58	78	2.6	193
March	17.0	-13.0	0.6	112	79	2.7	270
April	21.1	-5.5	8.3	111	68	2.6	340
May	23.1	-1.9	11.1	66	71	2.0	412
June	26.4	7.4	16.9	85	86	1.7	373
July	27.5	12.0	19.4	117	91	1.4	360
August	26.8	11.8	19.1	111	90	1.3	323
September	24.7	2.7	16.0	22	85	1.5	345
October	21.2	-2.9	10.4	100	86	1.8	217
November	18.3	-14.4	5.5	124	73	2.3	168
December	11.1	-13.4	-3.0	52	80	2.5	107
The Year	27.5	-20.3	8.6	1044	81	2.1	269

2006:

Month	Temperature (deg. C)			Rain (mm)	Humidity (Rel. %)	Wind Speed (m/s)	PAR*
	Maximum	Minimum	Mean	Accumulation	Mean	Mean	Mean
January	11.8	-10.1	1.9	106	79	2.7	114
February	13.1	-18.3	-2.1	28	72	2.7	206
March	20.9	-10.5	2.8	52	72	2.4	258
April	23.1	-3.9	10.8	87	67	2.2	343
May	25.6	1.1	11.4	89	76	2.1	351
June
July
August
September
October
November
December
The Year	na	na	na	na	na	na	na

End of data summary.